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| Subject | Date Asked |
| RMI | 2/2/2012 |
| Q: i received your answer its very helpful to me, and i have another doubt whether socket permission is ... A: You can connect to the server the jar came from without RMI. It might be possible to use RMI if the ... | |
| RMI | 1/31/2012 |
| Q: i am M.Sc(cs&it) student i have a problem to run RMI because of socket permission so please send me ... A: Socket permission issues generally refers to trying to communicate to another server using an ... | |
| java applet | 1/29/2012 |
| Q: we know that in javascript we enter the source code by browser +view+ source but how to view the ... A: Java applets are compiled code, there is no source code typically available. You could get a java ... | |
| using the getlocalPort() method | 1/27/2012 |
| Q: Below, I have a code snippet of a client socket. I do not know how to get the local port of my ... A: You can get a list of commonly used ports. The vast majority of ports will not be used on a system, ... | |
| using the getlocalPort() method | 1/27/2012 |
| Q: Below, I have a code snippet of a client socket. I do not know how to get the local port of my ... A: You could iterate though a range of them and see what one is available. Note however that this ... | |
| using the getlocalPort() method | 1/27/2012 |
| Q: Below, I have a code snippet of a client socket. I do not know how to get the local port of my ... A: The method getLocalPort() always has been a method in the Socket class. You really don't ever need ... | |
| reading image files | 1/26/2012 |
| Q: I'm having a small problem in reading jpeg images. for(i=0;i< streamData.length;i++) { ... A: Instead of just printing out that the image does not exist on any exception, you should print out ... | |
| java | 1/19/2012 |
| Q: good morning sir... sir is it possible to add a url in java swing or in jlabel..... A: Yes you can. You can put html code in your jlabel by having the text inside the JLabel start and end ... | |
| java mysql | 1/14/2012 |
| Q: .... i m just trying to insert data into mysql using java swing... i tried some methods from ... A: The satement: DriverManager.getConnection(url,username,password); needs to be Connection conn = ... | |
| JAVA ARRAY | 1/9/2012 |
| Q: good morning sir.... actually i tried to find a value from array in java... if suppose searching ... A: You are trying to do this problem recursively. That is find calls check, which calls find again, and ... | |
| removing blue and red channel from RGB color image | 1/8/2012 |
| Q: Below is my code snippet.I need to extract red and blue channel and my resultant image should be in ... A: All you need to do is set the RGB value back on the image: File e = new File( "1.jpg" ); ... | |
| java mysql | 1/3/2012 |
| Q: sir how can i find/check whether a column and table present in mysql using java.... thanks sir... A: To determine if a table exists in a database (which is rare you would do this, as the database ... | |
| java mysql | 1/2/2012 |
| Q: good morning sir have a nice day.....happy new year... shall you explain java with my sql ... A: Your two programs are different, I don't understand why you would expect them not to change. I did ... | |
| java mysql | 1/2/2012 |
| Q: good morning sir have a nice day.....happy new year... shall you explain java with my sql ... A: Typically if you want to use variables in your sql queries you want to use a PreparedStatement, as ... | |
| Java with Oracle | 12/24/2011 |
| Q: good morning sir.....how do u do..? sir from last 24 hours i tried to connect my java prog with ... A: The first error is related to the network, it is possible that the database wasn't running at the ... | |
| table in java | 12/16/2011 |
| Q: heyy artemus, i want to know how to make a table in java ANSWER: If you want to display a table to ... A: I have a difficult time understanding you. By default users can edit the table by just double ... | |
| table in java | 12/15/2011 |
| Q: heyy artemus, i want to know how to make a table in java ANSWER: If you want to display a table to ... A: You should look at a tutorial: http://docs.oracle.com/javase/tutorial/uiswing/components/table.html ... | |
| Error Handling/Array List Help | 12/9/2011 |
| Q: I'm trying to design a program that intakes Coin Descriptions from files and puts there name and ... A: You are not using finally correctly. You should never use a return statement in a finally block, as ... | |
| java | 12/9/2011 |
| Q: sir my doubt is about exception handling in java.see the following code. import java.io.*; class c1 ... A: 1. The exception will be handled by the uncaught exception handler. By default, this prints the ... | |
| try catch | 12/6/2011 |
| Q: im having difficulty to try and catch my program. as it returns error handling when a user input a ... A: You can place the try block just around the place where you ask the user for input. E.g. do { ... | |
| Math in java | 11/19/2011 |
| Q: Can you tell me what is going on with the return statement? I don't think I've seen one like this, ... A: This is a recursive method. It invokes itself, each time reducing the power by one until it reaches ... | |
| Java | 11/18/2011 |
| Q: Can u please suggest a Java Tutorial site (free site more preferable) How long i need to spend to ... A: I would start with the official tutorial at: http://download.oracle.com/javase/tutorial/ simply ... | |
| about creating circle shape progress bar | 11/17/2011 |
| Q: i want to create a circle shaped progress bar in java which can rotate for given time and after that ... A: Since there isn't any Java component like this you will have to make your own. First, create a your ... | |
| convert RGB image to YUV | 11/17/2011 |
| Q: hey.. siR u last year s0meone questioned as fellows i have an image Box.rgb of size 4096 by 4096 of ... A: If you have a try-catch around these statements with using IOException as the catch you will not ... | |
| afollow up answer | 11/16/2011 |
| Q: i read your answer Before I explain this, I haven't heard issues of fonts not displaying correctly ... A: If you are using Eclipse or Netbeans (and probably some other IDEs, the editor you edit and run your ... | |
| convert RGB image to YUV | 11/13/2011 |
| Q: hey.. siR u last year s0meone questioned as fellows i have an image Box.rgb of size 4096 by 4096 of ... A: Your code is running in the main method which is static. The variables you declared are outside your ... | |
| convert RGB image to YUV | 11/9/2011 |
| Q: hey.. siR u last year s0meone questioned as fellows i have an image Box.rgb of size 4096 by 4096 of ... A: The error you are getting means that your variable R is not declared static, but you are trying to ... | |
| regarding files in java | 11/9/2011 |
| Q: i have to read a file and check each line . how to identify the tabspace ,space and enter at the end ... A: If you want to determine if a file ends with a CRLF, you can: File file = ...; RandomAccessFile ... | |
| platform independent | 11/4/2011 |
| Q: Can u please clear the meaning of platform independent. As java is platform independent what is the ... A: Java can run on most modern operating systems including Windows 5-7, Mac OS 10.4-10.7, Many distros ... | |
| java | 11/1/2011 |
| Q: sir, java plays .wav file.i have also code for that. but it doesn't play .mp3 file. i want to play ... A: The official mp3 plugin is from (you need to install a jar on the users system, but you can play mp3 ... | |
| Array problem | 10/22/2011 |
| Q: Can you tell me why the last array element in both arrays is always 0.0? ... A: The loop ends when i is 4. That is the logic is: Set i to 0 Ask for input Test if user put in 0, ... | |
| Array problem | 10/21/2011 |
| Q: Can you tell me why the last array element in both arrays is always 0.0? ... A: You are starting x at 1 and i at 0. Every time you go though your while loop you increment each by 1 ... | |
| accessing windows using java | 10/20/2011 |
| Q: I want to create a windows application which will store the current state of all running application ... A: No I can't. Microsoft spent a lot of time implementing this functionality and it still doesn't work ... | |
| java | 10/20/2011 |
| Q: sir my doubt is about format method in String class. "this method returns a string that contains the ... A: System.out.printf() only prints to standard out. String.format creates a new string that you can use ... | |
| Try and Catch Statement | 10/20/2011 |
| Q: I have confusion in Try,Catch and throw. In my Code i always use try and catch block and i never use ... A: A method can be declared with a throws clause that lists exceptions the method can throw. E.g. ... | |
| JAVA | 10/19/2011 |
| Q: Am trying to write a Java application program and an applet program that find the sum of all the ... A: Since you want an array of outputs your sum needs to be an array (and declared outside your for ... | |
| accessing windows using java | 10/17/2011 |
| Q: I want to create a windows application which will store the current state of all running application ... A: This sounds just like the hibernate function that windows already has built in (that is it saves the ... | |
| Computer Science JES | 10/16/2011 |
| Q: How do I write an algorithm to mirror an image diagonally in Jython Environment for Students? ... A: I haven't used Python, but I think Jython uses the same API that Java has. From the ImageIO class ... | |
| Arraylist of Arrayists | 10/5/2011 |
| Q: I have an outerArraylist which contains 4 innerArrayLists Objects which each contains 101 double ... A: Overall, I simply don't have enough information to fully diagnose this. There could be a number of ... | |
| To display the arabic letters using java language.. | 10/4/2011 |
| Q: . im a computer science student,learning java.. i run the java programs on command prompt in ... A: Printing Arabic letters depends on the locale of your OS. If your OS isn't Arabic, then the letters ... | |
| regarding files in java | 9/29/2011 |
| Q: i have to read a file and check each line . how to identify the tabspace ,space and enter at the end ... A: If you just want to trim off any white space at the beginning and end of a line, you can us the ... | |
| printing the content of jtable | 9/26/2011 |
| Q: i want to print the content of jtable i am using jbulider7 ANSWER: Use the print() method on your ... A: Are you sure you are calling this method on JTable? The following link indicates that it is a method ... | |
| I need textbooks suggestion | 9/26/2011 |
| Q: Sir, Greetings of the day. :) I would like to request to kindly suggest me some good textbooks and ... A: I don't know of any specialized resources on these topics. 1. The JSyntaxPane ... | |
| JPanels and MenuBars | 9/25/2011 |
| Q: I'm trying to write a Java application using Netbeans IDE. I made a project by going through New ... A: You will need to remove the existing panel from the frame (or whatever container you are using) ... | |
| Sending Email | 9/19/2011 |
| Q: I have TataPhoton Datacable internet and i want to send the E-mail Through my Laptop Aplication.Can ... A: You can, but as I mentioned, if you send it directly from your computer, the header of the email ... | |
| Sending Email | 9/17/2011 |
| Q: I have TataPhoton Datacable internet and i want to send the E-mail Through my Laptop Aplication.Can ... A: The way you are sending mail, it sounds like you are trying to connect to a mail server on your ... | |
| Extending JFrame | 9/16/2011 |
| Q: Why do some classes extend JFrame? Is it necessary, or are there some benefits to it? Thanks A: Aside from the conceptual part of making a frame that does something special, it's not needed. It is ... | |
| Proxy Server in Java | 9/14/2011 |
| Q: sir i have the following code for simple proxy server import java.io.*; import java.net.*; public ... A: In your browser (it's different for each one) you have to set the proxy to the host your server is ... | |
| using arabic language in java application | 9/8/2011 |
| Q: i want to use Arabic language in my jtable but all i get is small square thank you ANSWER: The ... A: Before I explain this, I haven't heard issues of fonts not displaying correctly for anyone using ... | |
| Program Error | 9/8/2011 |
| Q: I am having trouble running a perticular code that is in another folder. I moved the file to the ... A: If you want your code in a different package you must have the package deceleration at the start of ... | |
| using arabic language in java application | 9/7/2011 |
| Q: i want to use Arabic language in my jtable but all i get is small square thank you A: The default font used in JTable (which is the default system font) probably doesn't include Arabic ... | |
| Content Management System | 9/7/2011 |
| Q: Sir i want to develop a content management system(for college) i want the following facilities in ... A: 1. For Java mail you will need a separate library. You can find details on it, and download it from ... | |
| using packages | 9/4/2011 |
| Q: I am starting to learn packages in my programming and, while I can compile them, I keep getting an ... A: It is possible that your compiled class files were placed in a different directory than your java ... | |
| Internaal Frame and Frame | 8/30/2011 |
| Q: Sir i want to create two browsers in same window i have made a Frame and Two JInternal Frames to put ... A: Your getting your variable names and class names mixed up. You have a field in ... | |
| Two Web browsers in same window | 8/26/2011 |
| Q: Sir i want to develop an application which will have splitted browsers i.e two browsers in same ... A: I'm not sure how you are currently building your browser. But if you are using swing, you can simply ... | |
| Block downloading | 8/25/2011 |
| Q: . i spent 2 days just finding some programming language that can block file downloading on any ... A: The tricky part here is defining what is the difference between downloading and viewing. Each ... | |
| Verify Data Through Digital Certificate | 8/23/2011 |
| Q: I have two Filed UserName And Address After Filling these Both Fields The User has to Attached his ... A: How you code this depends on various details like the process the user is "attaching their digital ... | |
| Verify Data Through Digital Certificate | 8/17/2011 |
| Q: I have two Filed UserName And Address After Filling these Both Fields The User has to Attached his ... A: Concatenate all of these fields together and use the Digital signature certificate to sign the ... | |
| Problem To read XML | 8/11/2011 |
| Q: <book> <person> <first>Kiran</first> <last>Pai</last> </person> </book> and in jave ... A: As per the table at: http://download.oracle.com/javase/6/docs/api/org/w3c/dom/Element.html The ... | |
| obtaining data from a interactive flash | 8/11/2011 |
| Q: Hey Artemus, Basically i am running a study on a free online blackjack program, and i was wondering ... A: The easiest way to do this is to read on screen data. You can do this with the Robot class (in ... | |
| Dear Sir Some Line of Digital Certificate Not Understand | 8/8/2011 |
| Q: String s1="-----BEGIN CERTIFICATE-----6jCCA9KgAwIBAgIKMJQBIsFC8C/= -----END CERTIFICATE-----"; ... A: What you can do with the above code depends on what your end goal is. For example, you can iterate ... | |
| Dear Sir Some Line of Digital Certificate Not Understand | 8/8/2011 |
| Q: String s1="-----BEGIN CERTIFICATE-----6jCCA9KgAwIBAgIKMJQBIsFC8C/= -----END CERTIFICATE-----"; ... A: 1. Convert the string into bytes using the default encoding, which would be the same as: byte[] ... | |
| OutPut Of the XML | 8/4/2011 |
| Q: I have Some Line of Code Can U plz Plz tell me What is The Out put of these Line. String ... A: The document2 should look like: <FORMDATA>trial1234-A2nullnullon026781150</FORMDATA> The hierarchy ... | |
| Java problem | 8/2/2011 |
| Q: I have a Java problem. I have to make a data table using the following array information: Data #1] ... A: There seems to be some compiler errors that you need to sort out first. Isn't a valid for loop in ... | |
| Reading of XML file | 8/2/2011 |
| Q: i have problem to read the xml file.i m not undestanding the Way of Reading the XMl File and how the ... A: There are easy and more verbose options for using XML, the options you choose depend on how you are ... | |
| exception | 8/1/2011 |
| Q: mr can u help me, i have problem about : Exception in thread "AWT-EventQueue-0" ... A: This simply means as the exception states that captureSttream is null when this is executed. You ... | |
| Image processing | 7/31/2011 |
| Q: Sir i want to convert an image into a matrix representing the intensity levels of the image please ... A: If you place the image in a BufferedImage (using javax.imageio.ImageIO to read in the image) you can ... | |
| Java problem | 7/30/2011 |
| Q: I have a Java problem. I have to make several applets that shows the illusions created by Ewald ... A: This depends on the image. For many of them you want to draw a line at an angle. Here is a simple ... | |
| object polymorphism in java | 7/27/2011 |
| Q: why we take a reference variable for a super class and why do we typecast it to a sub class ... A: You do this so you can change the way One (in your example) behaves. E.g. class One { void show1() ... | |
| reference var in java | 7/20/2011 |
| Q: where do we use reference variable in java?I mean in which context we use a ref var? and one more ... A: Primitives in Java are pass by value. Objects (including arrays) are pass by value of reference. ... | |
| j2se | 7/17/2011 |
| Q: sir,please tell me a book name which is the best and easy to under-stand for referring core and ... A: The online java tutorial pages is the best place to learn about all aspects of the core java library ... | |
| j2se | 7/16/2011 |
| Q: sir,why should we use public before constructor....with out using public also we get the same result ... A: The public modifier allows code from other packages to access the constructor. As your code base ... | |
| Search engine | 7/14/2011 |
| Q: Sir i want to develop a search engine please guide me by giving me some sites to refer or some ... A: The first step you need to take is by reading data from web sites. You can do this with: URL url = ... | |
| j2se | 7/10/2011 |
| Q: what is internationalization in java? A: Internationalization is a process in which you make sure an application is usable by people in ... | |
| What is a Java Applet ? | 7/9/2011 |
| Q: . i am an elect. engg. student. my profeesor askd me 2 do a presentation on a java applet of a ... A: Convolution is a somewhat broad term, you can see the wikipedia article on it: ... | |
| Dialog boxes in BlueJ | 7/5/2011 |
| Q: I have recently completed a module with the Open University in which I have been introduced to OOP ... A: The JOptionPane, like many java components supports the screen reader technology. If it is not ... | |
| Printing in java | 7/2/2011 |
| Q: Sir, i am trying to print a Jpanel form in java but when i try to print it the top logo gets ... A: What you do largely depends on how you are printing. If you use JTable.print() method then it will ... | |
| Record/Write to a file, continuously | 6/28/2011 |
| Q: I'm using VLCJ to display & also record video from a camera. I want to continuously record to a ... A: You can't delete from the start of any file, you can only move contents further in the file ... | |
| CMD and Windows Explorer | 6/23/2011 |
| Q: so i am currently making a program that makes a UI such as the iPhone, so that users can easily use ... A: The file description is very specific to windows. You may be able to get this information using Java ... | |
| importing package in java | 6/19/2011 |
| Q: We know that package is collection of class.If we import iava.awt.*; then it should import all the ... A: There are cases where different classes in different packages can have the same name. There are 3 ... | |
| Calling the Function and passing the date object | 6/16/2011 |
| Q: I m confused with this code when i m calling the test1 function and passing the date object and set ... A: If you modify an object it is modified for all names you give it. You can't modify String. The ... | |
| IP Address of System | 6/2/2011 |
| Q: i want to find the IP address of my system with java SE? ANSWER: You can do: InetAddress address = ... A: I'm not sure why your having this problem, as its not happening for me. If you have to you can have ... | |
| background image to jpanel | 5/30/2011 |
| Q: i want to give a background image to my jApplet form.I tried the following code. public class ... A: What is probably occurring is that the GUI layout is interfering with adding your own components. ... | |
| java.lang.reflect.InvocationTargetException | 5/28/2011 |
| Q: so I have written a java program that represents somewhat the UI for an iPhone, in which you can ... A: This could be a problem with your jnlp or the jar. For detailed information you can look at the ... | |
| uploading an audio file | 5/27/2011 |
| Q: I am developing an online music recording system.Using applet i developed recording playing and ... A: It looks like the problem is in your server. The in.read(byte[]) method will only read a chunk of ... | |
| IP Address of System | 5/19/2011 |
| Q: i want to find the IP address of my system with java SE? A: You can do: InetAddress address = InetAddress.getLocalHost(); You can call toString() on the ... | |
| java save file time stamp | 5/14/2011 |
| Q: I want to save screen shot image periodically with file name as time at which its saved. similar to ... A: The code I have: ImageIO.write(logwin,"png",new File("save-" + System.currentTimeMillis() +".png")); ... | |
| Java paint/swing | 5/14/2011 |
| Q: I am writing a mini game. I am trying to paint or draw a image from an array that access's my draw ... A: You can paint an image like: @Override protected void paintComponent(Graphics g) { int x = ...; ... | |
| java save file time stamp | 5/13/2011 |
| Q: I want to save screen shot image periodically with file name as time at which its saved. similar to ... A: The following code will start the screen capture when startScreenCap is called. The screen capture ... | |
| java code for auto login | 5/7/2011 |
| Q: i have 4 emil(hotmail) id each for different people/purpose...so i want to automate login process. ... A: You can't really control web browsers too well using Java. Java can communicate to web sites, but it ... | |
| uploading audiofile.. | 5/6/2011 |
| Q: I used the code to create an audiofile like this. audioFile = new File("junk.wav"); So when applet ... A: You don't need to save the file anywhere on the client machine. I'm not sure why you would have the ... | |
| sounnd recorder applet | 5/4/2011 |
| Q: My embedding of applet is like this: try{ %> <applet code="test.voicerecorder" ... A: You shouldn't need to save it anywhere. You can take the recorded buffer from the byte[] and ... | |
| UserInput - Bank Accounts | 5/3/2011 |
| Q: I'm supposed to be making a Program requiring User input to create a numerous amount of Bank ... A: One problem you have with the median is: System.out.println("Your median is: " + median); This ... | |
| UserInput - Bank Accounts | 5/2/2011 |
| Q: I'm supposed to be making a Program requiring User input to create a numerous amount of Bank ... A: In your ask method you want to pass each of the variables you got from the user directly to the ... | |
| UserInput - Bank Accounts | 4/30/2011 |
| Q: I'm supposed to be making a Program requiring User input to create a numerous amount of Bank ... A: The first mistake you made is using static variables. If the compiler tells you you can access a ... | |
| sounnd recorder applet | 4/27/2011 |
| Q: My embedding of applet is like this: try{ %> <applet code="test.voicerecorder" ... A: Using a try-catch in the servlet code won't help since the error will be thrown on the client side ... | |
| online sound recorder | 4/26/2011 |
| Q: I am developing a sound recorder website.As i did as desktop application it worked, the same line of ... A: If you use the same key signer you won't need to accept the security warning again, if you check ... | |
| Java | 4/23/2011 |
| Q: I'm making a program to calculate various properties of various geometric shapes. I have 17 classes, ... A: You probably want your show method to take 0 parameters. Then each class can override that method to ... | |
| online sound recorder | 4/21/2011 |
| Q: I am developing a sound recorder website.As i did as desktop application it worked, the same line of ... A: Chances are the code you have will try and record sound from the server, not from the client viewing ... | |
| Java string | 4/18/2011 |
| Q: Write an application that takes as a command line argument a word and outputs how many vowels are in ... A: First change: for (int i = 0; i < args[0].length(); i++) not for (int i = 0; i < args.length; i++) ... | |
| Java strings | 4/18/2011 |
| Q: Write an application that takes as a command line argument a word and checks if it is a palindrome. ... A: args is the number of command line arguments. When your program runs only the first should be there. ... | |
| Java LCD Display | 4/18/2011 |
| Q: I have to display the integers which I am passing through arguments in the form of LCD Display. Ex. ... A: What you need to do is associate each number with a String for the letters displayed on that line. ... | |
| Java | 4/17/2011 |
| Q: I need to write a program that enters a new line and a space and a "*" based on a number that the ... A: You will need 2 for loops, one inside the other. The outer for loop prints each line, the inside for ... | |
| JAVA | 4/17/2011 |
| Q: Sir as told by you i have increased the heap size to -xmx1000m i have done it in The following way ... A: As usual, try-it-and-see. Do a few tests and if it looks like the client side needs more ram, you ... | |
| JAVA | 4/15/2011 |
| Q: Sir i have the following code for scren capturing it is capturing in png format but when i am ... A: If you want to send multiple kinds of data, you are going to need to use a header when sending your ... | |
| JAVA | 4/15/2011 |
| Q: Sir i have the following code for scren capturing it is capturing in png format but when i am ... A: You are correct the SourceDataLine is for playing sound to the speaker regardless of where it comes ... | |
| JAVA | 4/13/2011 |
| Q: Sir i have the following code for scren capturing it is capturing in png format but when i am ... A: Chances are that the ImageIcon class is caching the image. There is no reason to write the image to ... | |
| JAVA | 4/11/2011 |
| Q: Sir i am doing web meeting and desktop sharing and desktop sharing is done by continuously sending ... A: If you want to use png you will need to obtain a library that encodes and decodes the images for ... | |
| JAVA | 4/9/2011 |
| Q: Sir i want detailed explanation on this code of voice chat import java.io.BufferedInputStream; ... A: Instead of sending individual images over the network, you can send video which will be better since ... | |
| java applet | 4/9/2011 |
| Q: how can i draw a circle which move around the screen? A: Add a location field to your applet. Inside your paint routine, paint the circle at the location ... | |
| toString | 4/8/2011 |
| Q: Sorry to harass you with questions. Could you please tell me how to start the toString method with ... A: The toString method should produce a description of the instance and class as a String. This can be ... | |
| UML | 4/7/2011 |
| Q: I'm still confused about the copy constructor. Here is my code below, and the UML that we need to ... A: Your copy constructor should be declared: public Sprite(Sprite other){ this.xPos = other.xPos; ... | |
| JAVA | 4/7/2011 |
| Q: Sir i want detailed explanation on this code of voice chat import java.io.BufferedInputStream; ... A: You can increase the quality by changing: int quality = Integer.parseInt("75"); to a higher number ... | |
| Copy Constructor | 4/6/2011 |
| Q: Can you please explain to me exactly how to use a copy constructor? We have 3 classes written by ... A: The copy constructor takes a single parameter, an instance of the current current class. In that ... | |
| JAVA | 4/6/2011 |
| Q: Sir i want detailed explanation on this code of voice chat import java.io.BufferedInputStream; ... A: //Sets up a TCP/IP connection to that computer. The computer on the other end must have a ... | |
| adding image files while making jar to exe form | 4/6/2011 |
| Q: I tried jar2ExeWizard 1.8 to make my jar file to exe format in windows.It worked fine except that ... A: See if your program works properly as a jar file. (Have netbeans export it to a jar, and either ... | |
| adding image files while making jar to exe form | 4/5/2011 |
| Q: I tried jar2ExeWizard 1.8 to make my jar file to exe format in windows.It worked fine except that ... A: I haven't used this program. How are you retrieving your background images? Make sure you use ... | |
| arrays | 4/4/2011 |
| Q: I am new to programming and I'm having trouble with passing arrays to a non-main method. I have to ... A: So, there are several steps here. I'll assume that you want the sum of each array index put into ... | |
| outputting html text in jtextarea? | 4/1/2011 |
| Q: Is there any way to print html content in jtextarea? A: You can put html into a JEditorPane, which acts in a very similar way to JTextArea. Letting the user ... | |
| Multiple Constructors. | 3/31/2011 |
| Q: I'm Marlon alvares and I have a follow up question on java. The issue is I had asked another expert ... A: What you want to do is use factory methods that create an instance of the class for you. The square ... | |
| java audio | 3/31/2011 |
| Q: hey i m doin a project on voice recognition where the voice will be used as a password.so i decided ... A: To record audio see: ... | |
| audio | 3/29/2011 |
| Q: how do i get the data set from an audio file in .wav format using java?? A: I'm not sure what you mean by "data set", but you can use classes in the javax.sound.sampled to ... | |
| making jtable and textarea stretchable | 3/25/2011 |
| Q: While runninng my desktop application, i would like user can strech jtable and jtextarea as he ... A: What you probably want is that the JTable and JTextArea expand as the JFrame expands. If these are ... | |
| Java Help | 3/24/2011 |
| Q: Once again I am in dire need of your help. I am attempting to write a program to merge two user ... A: You are getting this error since you don't have any constructor. Just add one: public ... | |
| java to jar | 3/24/2011 |
| Q: Can u tell me how a java project done in netbeans 6.9.1 can be converted to a jar(exe) form, so that ... A: Jar files are usually executed with: java -jar <jar file> or if you don't want to use the manifest: ... | |
| args[0] | 3/24/2011 |
| Q: I am trying run/make a jar file and it compiles fine but when I try to run it nothing happens. I ... A: It is possible that the method you call: Get_Links_M.main never actually returns, but rather calls ... | |
| Java Help | 3/23/2011 |
| Q: Once again I am in dire need of your help. I am attempting to write a program to merge two user ... A: The question is, what happens when one file is longer than the other? If you want to stop when ... | |
| Sorting | 3/18/2011 |
| Q: i have a problem in sorting numbers in ascending order..... and the numbers should be entered by the ... A: You can use Collections.sort method to do this: ArrayList<Integer> list = new ArrayList<Integer>(); ... | |
| Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 | 3/18/2011 |
| Q: i really cant see what is wrong with this codes .. pls help me import java.io.*; import ... A: When you run the program you need to provide the Grid file as the program argument. Otherwise, the ... | |
| java security | 3/17/2011 |
| Q: How can i block access to specific packages like java.net, so that plugins don't send out passwords ... A: There are probably better ways of doing this, but... //Load your plugins with: final URLClassLoader ... | |
| j2se | 3/16/2011 |
| Q: what is the aim to design rootpane in swing? Actually i am confused in the layering system used in ... A: The API for many of these classes will help a lot in understanding how it works. For the RootPane, ... | |
| dictionary | 3/13/2011 |
| Q: i want to make a english to english dictionary in java. please help me how can i start. A: To make a dictionary, start by using a HashTable. A HashTable allows you to put a pair of objects ... | |
| exception while using httpclient | 3/11/2011 |
| Q: I have to pass some values(username,password) through http post method to a site from a stand alone ... A: If your using Netbeans (or Eclipse) simply include all the necessary jars in your library. This will ... | |
| multiple inheritance in java | 3/10/2011 |
| Q: Sir, I have a dought regarding multiple inheritance in Java, i want to know that wether multiple ... A: Multiple inheritance is strictly speaking not allowed in Java. Instead you can inherit from 1 class ... | |
| making jtable column fitting to text | 3/7/2011 |
| Q: I have solved the problems i asked u previously. And now my problem is that i want my jtable column ... A: Sorry for the delay, it took a while to figure this out: int maxWidth = 0; for(int i = 0; i < 10; ... | |
| jtable selectionlistener | 3/5/2011 |
| Q: i tried table selection listener but getting exception Exception in thread "AWT-EventQueue-0" ... A: Its hard to say what is causing that since I don't know what line 184 where the exception occurred ... | |
| making handcursor over jtable | 3/5/2011 |
| Q: On my jtable i want my cursor to be as handcursor where there are entries.In the area there are no ... A: You can do this by adding a mouseMotionListener to the JTable, and when the moveMoved event happens, ... | |
| Java Code Question | 3/4/2011 |
| Q: You recently helped me out so much on a previous project about two weeks ago, I was wondering if you ... A: You are misunderstanding how method calls work. The following code: secondGuess(maxGuess = ... | |
| jtable listener | 3/4/2011 |
| Q: I am trying to add a mouseclick listener (or selection listener) for my jtable.But it doesnt work.I ... A: To listen to when the row changes you can: table.getSelectionModel().addListSelectionListener(...); ... | |
| making different fonts for different rows in jtable | 3/4/2011 |
| Q: Unfortunately i had to change my jlist as jtable.Again the same problem arises. I have a jtable and ... A: You can either put non-string values into the JTable, e.g. make your own class that includes the ... | |
| Java Code Question | 3/3/2011 |
| Q: You recently helped me out so much on a previous project about two weeks ago, I was wondering if you ... A: If you look at the line where you generate the last random number: int finalAnswer = ... | |
| jlist can be vertically splitted into columns? | 3/2/2011 |
| Q: i have a jlist and i have to have two columns inside it.One for Date and other for new headline.Is ... A: First, consider using a JTable instead of a JList. If you still want to use a JList, you can use ... | |
| problem with grid layout | 3/2/2011 |
| Q: I am displaying a jlist, textarea, and button in grid layout.The problem is that every thing works ... A: For best control use a GridBagLayout, its not the easiest to use, but gives you the most power. You ... | |
| jList .getSelectedValue cant be converted to string.. | 2/24/2011 |
| Q: i have a jlist and its elements are an object array aontaining one font element and one text.The ... A: The exception here is that when: if (value instanceof Object[]) is false, then theFont and theText ... | |
| Array and SQL Performance in Java | 2/23/2011 |
| Q: I have a String array sized of 1000 to keep the data to be looped into a select statement in order ... A: You should probably use a PreparedStatement for this, e.g.: Connection con = ...; Array sqlArray = ... | |
| jList .getSelectedValue cant be converted to string.. | 2/23/2011 |
| Q: i have a jlist and its elements are an object array aontaining one font element and one text.The ... A: Since you put Object[] as an element in, that's what you need to take the data out as. The code ... | |
| java | 2/22/2011 |
| Q: Is there any function to clear the screen in applet? I'm beginner to java... can u help me... and ... A: The repaint() method will cause the paint(Graphics g) method to be called to repaint the screen. ... | |
| Sequencing Threads | 2/21/2011 |
| Q: I have a program where two threads go through a lock and print out 1 through 1000. What I would like ... A: Typically, two threads don't go at the same time as they are sharing some resource that only one ... | |
| Basic Java Project Help | 2/21/2011 |
| Q: I'm working on a project for school in Java programming, I've had alot of trouble with programming ... A: The only error I can see is that setArmor method is assigning the input value to the parameter ... | |
| Java counter and comparison | 2/20/2011 |
| Q: I am working on one part of a lottery code. I need to compare and count how many times one variable ... A: You have intrandom1_999 declared, not random. Also, note that (int) (Math.random() * 1000) can ... | |
| Java | 2/20/2011 |
| Q: . I have some doubts in naming conventions. Whether '_variable' or 'variable_' i should use for ... A: Typically in Java you don't name public and private variables differently. The reason for this ... | |
| OUT OF DATE 2 | 2/19/2011 |
| Q: I was wondering would you please tell me: is it important for your computer to have java? Thanks ... A: The term Java refers to a few things. The wikipedia article on Java ... | |
| making handcursor on text in JList | 2/18/2011 |
| Q: i have some text in jList , and it acts like a url, when clicking goes to specific site.it works and ... A: The method that will help you do this is getCellBounds. The code would look something like: Cursor ... | |
| Java counting question | 2/16/2011 |
| Q: I will try and explain this to the best of my abilities. I am currently taking a low level ... A: I'm trying to figure out what you mean by: count the number of deposits and withdraws made within a ... | |
| Regarding database connectivity on LAN | 2/15/2011 |
| Q: Sir, How is it possible for all computers connected to the LAN to access a central database on the ... A: First, you will need to make sure the drivers for connecting to this type of database are in your ... | |
| Java Program | 2/10/2011 |
| Q: I'm no computer wiz so please excuse me if I went to the wrong site to get help. My computer was ... A: It is possible that you have multiple versions of Java installed, if you want to try ... | |
| java to SQL statement special characters & text area new line | 2/1/2011 |
| Q: Im currently finishing up my java project on social networks and i recently found two problems. i ... A: PreparedStatements are really the best option. Escaping out the special characters depends on what ... | |
| Inserting a BLOB into SQL database | 1/20/2011 |
| Q: Im currently doing a school project using Eclipse and Im using a mySQL database to store all the ... A: What is the condition on which they are removed? You have to somehow associate that condition with ... | |
| Inserting a BLOB into SQL database | 1/19/2011 |
| Q: Im currently doing a school project using Eclipse and Im using a mySQL database to store all the ... A: 1. desc is a keyword in SQL, short for DESCRIBE. Since it is a keyword you will need to use ... | |
| Inserting a BLOB into SQL database | 1/15/2011 |
| Q: Im currently doing a school project using Eclipse and Im using a mySQL database to store all the ... A: The best way to do this is with a PreparedStatement. What you can do is create a PreparedStatement ... | |
| monitoring port address | 1/7/2011 |
| Q: How can i get the http requests given through the browser using a program or monitor the http port ... A: Provided the browser is set up to use the proxy, you can have the proxy monitor the amount of data ... | |
| monitoring port address | 1/7/2011 |
| Q: How can i get the http requests given through the browser using a program or monitor the http port A: Monitoring the http port is tricky, but you can set your browser to go though a proxy which can ... | |
| Need help with java string manipulation | 1/3/2011 |
| Q: I need your help with couple of these questions.Can you please help me out 1)write a Java program ... A: If I understand you correctly: Sort from left to right Alpha characters in reverse order (AB comes ... | |
| Need help with java string manipulation | 12/31/2010 |
| Q: I need your help with couple of these questions.Can you please help me out 1)write a Java program ... A: 1. There are many ways to implement a sort. If you want to use Java's built in sorting you can use ... | |
| Java Web Application | 12/16/2010 |
| Q: I recently paid a freelancer to create a Java application, I've been doing some research online and ... A: This isn't usually hard. An application's start point is the main method, while an applet's start ... | |
| Print PDF without Print dialog box | 12/15/2010 |
| Q: I need to print a PDF without opening it and without print dialog box in java. A: Use the methods in PrinterJob, just don't call the printDialog() method. E.g. import ... | |
| java question | 12/9/2010 |
| Q: what is the difference between awt and swings in java? A: awt is native components of the OS, while swing is Java rendered. AWT is very limited and isn't ... | |
| Array List | 11/28/2010 |
| Q: I am trying to display one String element of an ArrayList from a different method. How can I do ... A: A list iterator is probably not the best choice if you plan to keep it around for a while. Any ... | |
| Array List | 11/27/2010 |
| Q: I am trying to display one String element of an ArrayList from a different method. How can I do ... A: I'm not fully sure what you are asking, but using a ListIterator may be what you want. E.g. ... | |
| java | 11/22/2010 |
| Q: how can i solve something like 2*3+4 in java when it is directly entered by the user??? A: What you do is use a Stack, each symbol (number or operator) gets pushed onto the stack. When symbol ... | |
| The same problem explanation | 11/15/2010 |
| Q: Here is a snippet of what the core program is doing void executeAStatement(String[] statement, ... A: You will need a class variable that tells the emulator to pause. When the breakpoint window is ... | |
| Plzz help about JTextPane class | 11/14/2010 |
| Q: I am designing an assembler and i want keywords like "MOV","CMP","ADD","SUB" etc to be automatically ... A: The breakpoint window has to tell the running program where to stop. The running program has to ... | |
| prime numbers | 11/9/2010 |
| Q: I need an example of 2 prime numbers that when multiplied together equals a 400 digit number A: Use the following code: import java.util.Random; import java.math.BigInteger; ... Random rnd = new ... | |
| Plzz help about JTextPane class | 11/6/2010 |
| Q: I am designing an assembler and i want keywords like "MOV","CMP","ADD","SUB" etc to be automatically ... A: The tutorial for this is at: ... | |
| why we use semicolon after braces | 11/2/2010 |
| Q: 1-i have one class inside of this i Have one function and inside of this function i have written ... A: You cannot have methods directly inside of methods, but you can have classes inside of methods which ... | |
| why we use semicolon after braces | 11/1/2010 |
| Q: 1-i have one class inside of this i Have one function and inside of this function i have written ... A: 1. You have some syntax mistakes in your code. I'm not sure what you want to accomplish with the ... | |
| Swing question | 10/27/2010 |
| Q: Is it possible to add a close button to a panel and we can handle the closing event of the panel ... A: You can add another listener to the button. If the component is closed by hiding it you can add a ... | |
| computer | 10/26/2010 |
| Q: compatible code in java of the following C++ code char ch[4]; for(int i=0;i<4;i++) {ch[i] = getch(); ... A: Java doesn't have any equivelent to the getch() function. And any input read from the console is ... | |
| Hashing algorithm | 10/16/2010 |
| Q: Use the universal hashing function h(x, r)and hash n distinct keys into m buckets. 1)What is the ... A: For the second question, if you have m = n, then it is possible, but very unlikely that every key ... | |
| java | 10/6/2010 |
| Q: what is inline function in java ? A: There is no 'inline' in Java. The JIT makes all the decisions on what to inline. There are hidden ... | |
| J2SE | 10/1/2010 |
| Q: Respected sir,I have a JTable with row n col.Data is stored in JTabel.Suppose in 1 column Name is ... A: First you need a way to distingush the updating type from the synchronized type: public class ... | |
| encrypt the password | 10/1/2010 |
| Q: sir , I want when any client register to himself and enter the password, the password should save in ... A: Use the MessageDigest class to do this: E.g. import java.nio.*; import java.nio.charset.*; import ... | |
| transform a string array intro an int array | 9/24/2010 |
| Q: i programmed this and i does not work: import iic1103Package.*; public class asdf { public static ... A: I'm not sure what you are trying to accomplish. But..., pedido = ... | |
| Following functionalities to be achieved. | 9/23/2010 |
| Q: as a project i am preparing 8086 assembly language programming emulator. i need help to achieve the ... A: 1. What you probably want to do is have the line numbers as a seprate component on the side (e.g. a ... | |
| Finger Print Scanner | 9/21/2010 |
| Q: Can anyone tell me , if you have an experience in communicating with external devices like barcode ... A: You would need to use signed applets to do this, as normally applets cannot access external devices. ... | |
| Swing | 9/13/2010 |
| Q: I am trying to make a swing application and using NET BEANS IDE for this purpose. as swing design is ... A: If netbeans supports this, use a CardLayout, as it is designed to have multiple JPanels, in a single ... | |
| java tim environment | 9/11/2010 |
| Q: update on my computer. what are the changes will be if i install it? does it affect my computer/ if ... A: The Java runtime environment allows you to run java programs. Java is used both for applets in your ... | |
| java programming pertaining to string | 9/4/2010 |
| Q: take input of a string find the longest word in the input string without using array using string ... A: Iterate though all the characters in the string (using charAt(i)) each letter you come across you ... | |
| online chating | 9/4/2010 |
| Q: sir, now i have to work on online chating.sir plz provide me code in java or suggestion to make ... A: You need 2 parts First, create a front end GUI that the user types messages into. You can find a ... | |
| Java Swing | 8/31/2010 |
| Q: i've lot of doubts over java Swing, let start off with m basic. 1. what is the main difference ... A: 1. See the gridbaglayout tutorial: ... | |
| Java Input | 8/30/2010 |
| Q: how many ways one can read in java like scanner,filestream, inputstream and many more. please list ... A: There are numerous ways to get external data. Here are a few: InputStream: This is a class that ... | |
| Keyboard | 8/28/2010 |
| Q: I would like to write java code such that it reads from the keyboard and write to the txt file. user ... A: There are various programs out there that do this (primarily as tools to capture passwords as other ... | |
| Halo, | 8/25/2010 |
| Q: my immediate challenge at the moment is packaging applications/systems, such that i can create an ... A: You can use Java Web start which allows you to distribute a single JNLP file, that when opened will ... | |
| Re:rmi | 8/25/2010 |
| Q: how can i discard the command given by one client to shut down or restart the remote server while ... A: This depends on the operating system. You would simply need to use ... | |
| java application without window. full screen? | 8/20/2010 |
| Q: sir, i am a graduate final year student and i am at my mini project work. so i need to develop a ... A: It shouldn't matter if you are using netbeans. If you need to use a Frame instead you can use: ... | |
| java image package | 8/20/2010 |
| Q: I have tried following code in java loading an image but its not showing me image.Can you help?I ... A: The image variable should not be null since even if you didn't provide a valid file name, you would ... | |
| Inner classes | 8/15/2010 |
| Q: "ABOUT INNER CLASS" as 'Local classes are declared within a block of code and are visible only ... A: Don't confuse inner classes with local inner classes. E.g. the following is a non-local inner class: ... | |
| CPU information | 8/15/2010 |
| Q: How to find CPU information (serial number, version, architecture,cache size,cache speed...etc)from ... A: Much of this information can only be found using external tools that are different depending on the ... | |
| java client programing - HTTP post - | 8/12/2010 |
| Q: I want to submit a HTML form & save the data(HTML file) sent by the server. The form uses post ... A: To use post you need to cast your conn to HttpURLConnection and use setRequestMethod("POST"). After ... | |
| scjd preparation | 8/11/2010 |
| Q: sir, i have cleared scjp and a want to go for scjd, which books should i follow to get pass in scjd ... A: I haven't taken either exam. Both are used to demonstrate a base level of experience in Java which ... | |
| Print number backards | 8/11/2010 |
| Q: i have an homework but about loops. but she didn't explain it yet. i don't know how can i solve ... A: The mod 10 (% 10) operation will get the last digit of the number. This is because when you divide a ... | |
| java | 8/10/2010 |
| Q: what is the difference between system.exit(0),system.exit(1) and system.exit(-1) A: This is just the return code that the program gives when it exits. If another program runs your java ... | |
| Daemon Thread | 8/10/2010 |
| Q: I've to develop chat application(IM) in my project.I have used netbeans as IDE & technology is JSF & ... A: You could try adding the refresh tag to your iframe that has the textarea. E.g. <meta ... | |
| nullpoiner exception | 8/9/2010 |
| Q: i have written the following code for Read the nth character from nth line in reverse order from a ... A: If you are getting a null pointer there, that means an exception was thrown before freader was ... | |
| what i should have learned from java | 8/9/2010 |
| Q: I've recently finished studying Java SE. And I was wondering, because I'm now switching to other ... A: As a computer scientist you should be able to pick up other languages easily. Various languages have ... | |
| just an explanation | 8/6/2010 |
| Q: below is a code i came across.. something to do with for loops.. when i allocated space for the ... A: When you allocate an array, all values will be 0 or null. ages[i][j] = i * j; Will overwrite the ... | |
| java | 7/31/2010 |
| Q: to write a java code to select foreground or background using checkbox controlb0o radoi button and ... A: You can attach an actionListener to each of these buttons and the check box. From there you can use ... | |
| java application without window. full screen? | 7/30/2010 |
| Q: sir, i am a graduate final year student and i am at my mini project work. so i need to develop a ... A: Step 1: Make a Window, not a Frame. Windows don't have boarders title bars, and don't appear on the ... | |
| Programming (Game) | 7/26/2010 |
| Q: I need help in making casino game. Directions are: Create a casino style game that involves user ... A: You can generate a random number with: Random random = new Random(); ... int randomNumber = ... | |
| Scanner & exception | 7/24/2010 |
| Q: I am not sure what is wrong with my While Loop because if select ("Press 0 to edit info."), I will ... A: The only problem I can see is that when you ask to get a number you use nextInt. This will get the ... | |
| finding greatest prime factor of a given integer (java,using loops) | 7/22/2010 |
| Q: i saw your solution of primenumber test, and was really fascinated by the approach u made. it really ... A: Most of these are not something you can easily figure out but bits of knowledge you pick up along ... | |
| Problem In Java 3D | 7/20/2010 |
| Q: Harper, I am worling in Project Of Java 3d, and I have problem in it that i have ... A: Please clarify: 1. Does zooming work without a button click 2. What 3D API are you using? 3. Do you ... | |
| Programming | 7/18/2010 |
| Q: public static void launchBrowser ( ) Whats the code to launch browser? We can use ... A: First you probably need to add quotes around that program location since there is a space between ... | |
| Programming | 7/18/2010 |
| Q: public static void launchBrowser ( ) Whats the code to launch browser? We can use ... A: A try-catch block looks like: try { //Your code that an exception can occur in } ... | |
| Programming | 7/18/2010 |
| Q: public static void launchBrowser ( ) Whats the code to launch browser? We can use ... A: There is no single way to do this. If you know your system is windows you can do: "cmd /c start ... | |
| jbutton | 7/12/2010 |
| Q: I am to create a swing applet that displays a yellow smiling face on the screen. I have added a ... A: The only place where you do actual painting is: g.drawImage(smile, 110, 110, this); which is why ... | |
| How do I generate a random integer between 1st integer and 2nd integer? | 7/11/2010 |
| Q: I would like to generate an integer number between 1st integer and 2nd integer but I am lost as to ... A: You mostly have your code in the wrong order. You should: 1. don't initialize start and end to 0 ... | |
| Access Specifier Query | 7/8/2010 |
| Q: class studinfo { int m1,m2; void getdata(int m11,int m22) { m1=m11; m2=m22; } void disp() ... A: The lack of an access modifier is known as 'package'. Package access means that any class within the ... | |
| Eclipse | 7/6/2010 |
| Q: I have 2 pieces of code and I don't know how to combine together. And I also want to add in if ... A: Using a scanner is probably not a good idea if you want to mix letters and numbers. What I would do ... | |
| Does Java Socket works on shared ip ? | 7/5/2010 |
| Q: I am really a newbie in java. But i have decided to make a big project ( always my habit and never ... A: 1. A dynamic IP is valid for the duration it is being used. You will need some way to have the ... | |
| image not shown in client side | 7/5/2010 |
| Q: i receive the image in hex format from server through socket .after getting the hex code and save ... A: If the image is not showing up you should check that the bytes of the image match those on the ... | |
| .gif image | 6/26/2010 |
| Q: I was hoping you could help me with something. I want to download an animated wallpaper to my phone, ... A: I don't think the Java phone API includes the libraries to manage images like this. But in Standard ... | |
| Regarding cpu utilization | 6/24/2010 |
| Q: Sir kindly tell me , what are the possible input i can give to calculate CPU utilization, coding ... A: The ManagementFactory is the starting place for determining CPU utilization for the current running ... | |
| java applet - processor hog | 6/16/2010 |
| Q: My system is a HP cq40 laptop, 2.1gb AMD, 2.5gb ram,ATI radeon 256mb, running Vista 6 home basic. I ... A: There is not much you can do. The game may have been written using busy loops, meaning that the game ... | |
| Pulling up data from java script to textbox | 6/16/2010 |
| Q: Im very new to Java Script and hoping some one will help me with my question. I have a html code ... A: First I am an expert in Java, not Javascript. Second, I haven't used ActiveX. No you can't disable ... | |
| java code for textbox autofilling | 6/14/2010 |
| Q: Artemus Harper thanks for your reply ,but i still wonder if you know what the java code used by ... A: That's not an addon, its built into firefox. Also you are probably confusing Java with Javascript. ... | |
| APNGs | 6/7/2010 |
| Q: I have an APNG that I would like to animate in my gui program, but I can't figure out how to do so. ... A: I don't think Java supports APNG natively. There are some PNG libraries that will get you get each ... | |
| Eclipse Help: Generating 10 letters with at least 2 vowels in it. | 6/5/2010 |
| Q: I'm working on a game and I'm doing out the codes in parts. The game needs me to generate 10 letters ... A: The easiest way to do this is to add a while loop around your for loop that, after you generate the ... | |
| adding KeyLister() | 6/3/2010 |
| Q: I have a class Key which implements KeyListener. In the KeyPressed() method I called another thread ... A: Typically, you would record that the key is pressed in a (boolean) variable. When the key released ... | |
| LinkedList | 5/31/2010 |
| Q: How do you insert a text data file into a linked list in alphabetical order by the last name? The ... A: If you really want to support Roman numbers, you will need to parse that out and create your own ... | |
| Job as a programmer | 5/29/2010 |
| Q: sir, i require money for my further studies. I am good in programming in JAVA and able to program ... A: It is rare to see jobs available that you can telecommute to all the time. Furthermore most of these ... | |
| LinkedList | 5/28/2010 |
| Q: How do you insert a text data file into a linked list in alphabetical order by the last name? The ... A: You can reorder the word when you look at it. E.g. int spaceIndex = name.indexOf(' '); String ... | |
| question | 5/28/2010 |
| Q: How we can write text on panel? and also can we split tha one panel in two section if yes the how? ... A: You can write text on a panel by adding a label to the panel, or using the drawString in ... | |
| Vector and Hashtable Classes in Java | 5/27/2010 |
| Q: I know that both vector and hashtable classes already a part of Java. But i want to develop them ... A: You can look at the source code of these classes, that should give you a clue. The Vector class ... | |
| eclipse help | 5/27/2010 |
| Q: I want to create a game and i do it separately. The game need to enable 2 players to input their ... A: The first problem you have is that you closed the main method with a } before you should have: ... ... | |
| Orders of Labels | 5/23/2010 |
| Q: Sir I want to know that can I arrange Labels acoording to my desired order. By default Java keeps ... A: You can use container.setComponentZOrder method to set the order that components are displayed (if ... | |
| java | 5/22/2010 |
| Q: txt) and another file (dictionery.txt) containing french special characters and their code asci in ... A: I can't seem to access the url you gave, might only work for your session. You need to break your ... | |
| Stoping Threads | 5/22/2010 |
| Q: Sir I have two classes: Class 'A' is implementing runnable and Class 'B' is implemeting KeyListener. ... A: If your plan is to constantly move a label until the user stops it, use a Timer instead (the one in ... | |
| Picture Difference code | 5/21/2010 |
| Q: I am writing a Picture Difference game for my school project. I need help on: -getting the mouse to ... A: First, are you talking about Java or Javascript? I know very little about Javascript. With java, ... | |
| For questions | 5/21/2010 |
| Q: What is the difference between Applet and frames? A: Applet is in the browser alongside any HTML code with the browser buttons and status bar. A frame is ... | |
| Programming Using Eclipse | 5/19/2010 |
| Q: I have a code that need many modification as after I have tried for several hours so now I'm seeking ... A: First, you don't need to initialize the vowel or consonant variable more than once (or do you even ... | |
| Java - Eclipse | 5/19/2010 |
| Q: Im having problems with generating random 10 letters and it must have 2 vowels. Can you help me? A: To get random numbers you can use the Random class: Random random = new Random(); int someNum = ... | |
| java: Convert rgb image | 5/15/2010 |
| Q: Sir can u tell me the step or procedure how read rgb values ??? AS given below plzzz in Java ... A: You can create and iterate though each of the YUV arrays. E.g. byte[][] Y = new byte[4096][4096] ... | |
| java: Convert rgb image | 5/13/2010 |
| Q: Sir can u tell me the step or procedure how read rgb values ??? AS given below plzzz in Java ... A: You can read data in with the DataInputStream class: import java.io.*; ... byte[][] R = new ... | |
| Graphics | 5/10/2010 |
| Q: Sir I am using NetBeans IDE 5.5. I have a JApplet. I used the setBackgroundcolor(Color.RED); to set ... A: Chances are that you are adding the JLabel and setting the background color in the wrong location. ... | |
| question | 5/7/2010 |
| Q: I want to know how do I wrtie a method that asks an user for an integer input. if the input is not ... A: One way: int userInteger = -1; while(userInteger == -1) { String userInput = ... | |
| Pause | 5/6/2010 |
| Q: im trying to code the game simon says and my issue is when i am tryting to print the colored blocks ... A: You never want to have a pause in the paint method. The paint method should print exactly what the ... | |
| Animation | 5/5/2010 |
| Q: Sir! I have a JLabel named JLabel1 its current location on the frame is (10,10). I want to move the ... A: Any code that modifies the GUI should be run on the GUI thread. When on the GUI thread you should ... | |
| java doubt | 5/5/2010 |
| Q: sir after running the following program the "run" menu command is not working properly and it is ... A: This seems dependent on what the file system and operating system on the host computer is. The run ... | |
| Questions which i cant find answers myself. | 5/3/2010 |
| Q: i've some questions which i cant find the answers wil u plz.. 1. where we have to use Interface and ... A: 1.interfaces and abstract methods act as a common way to perform different tasks using the same ... | |
| java BufferedReader | 4/28/2010 |
| Q: I am trying to write an airline program that reads in data from a bufferedReader. I can get it to ... A: Typically you would use another BufferedReader for a second file to read in. As far as editing them, ... | |
| using Polygon class | 4/27/2010 |
| Q: Artemus, I don't have a good understanding of Java and using classes. I just can't get it. I ... A: The only real thing your code is missing, is setting the right size for the frame. If you make the ... | |
| using Polygon class | 4/26/2010 |
| Q: Artemus, I don't have a good understanding of Java and using classes. I just can't get it. I ... A: The problem here is that you are using the polygon arrays to create the polygon before you ... | |
| linklist error | 4/26/2010 |
| Q: i want to subtract data of two nodes of one link list but it keeps giving me this error: operator - ... A: The data you have is declared as Object. You can't subtract two objects from each other any more ... | |
| using Polygon class | 4/26/2010 |
| Q: Artemus, I don't have a good understanding of Java and using classes. I just can't get it. I ... A: There are a few of problems with your code: 1. You are declaring variables in a different method ... | |
| adding digits of a no | 4/24/2010 |
| Q: how to add digits of a no. without using looping statements,control statments and recursion? A: Control statements include looping statements and recursion. The only way you could do this is if ... | |
| Java Stack Routine | 4/23/2010 |
| Q: Before I ask, this is a homework problem so I don't expect full working code. My problem statement ... A: // don't see what these two parameter could possibily be and seems to be the main source of ... | |
| n queens problem | 4/23/2010 |
| Q: I'm trying to write the n queens program that the user can choose the number of queens(4 or greater) ... A: The way you can do this is to have each node on the tree represent the placement of some of the ... | |
| Java | 4/21/2010 |
| Q: How to create and Attach MS Access Reports and Crystal Reports in Java. A: I haven't used Crystal Reports, and MS access only a little bit, much less integrated them with ... | |
| core java | 4/20/2010 |
| Q: how to insert sound when button is clicked in JFrame in core java using neatBean software A: You can use the AudioSystem (in javax.sound.sampled) to create a Clip, then load the Clip with data ... | |
| SQL to send and get | 4/20/2010 |
| Q: ..... new ques.. can u tell me the SQL query in JAVA to 1) send UNICODE word to database and get ... A: You can use one of the getClob methods from ResultSet. What you do from there depends on how you ... | |
| drawing lines through timer | 4/18/2010 |
| Q: i would like to moving lines i just made the lines part, but i have no idea how can i move it ... A: You need to keep a class variable (field) that is accessible by both the paint and your timer and ... | |
| Java Control Problem | 4/18/2010 |
| Q: ...... I want to display the Unicode fetched from the database in JAVA JTextArea.......... when ... A: One way to work around this issue is to encode your data in UTF-8 (or UTF-16). Simply convert the ... | |
| SQL to send and get | 4/16/2010 |
| Q: ..... new ques.. can u tell me the SQL query in JAVA to 1) send UNICODE word to database and get ... A: If the database is setup to accept unicode strings, you can use a PreparedStatement which will ... | |
| Java Control Problem | 4/16/2010 |
| Q: ...... I want to display the Unicode fetched from the database in JAVA JTextArea.......... when ... A: I haven't used MS access personally, so I cannot guide you in this regard, you could try asking an ... | |
| inheritence | 4/16/2010 |
| Q: just have a question on programming as i'm doing an assignment on class diagrams... i have been ... A: There is no such thing as a sub-method. Methods can override those in its class's sub-class. To do ... | |
| java | 4/12/2010 |
| Q: I have done a project in swing and i want whenever they open the computer the main frame of the ... A: You can use the startup folder. First start by making a .bat file with your java startup command. ... | |
| Rendering Image inside a java 3d cube | 4/10/2010 |
| Q: I am working on a project related to rendering 3d data collected from the radio telescope. For this ... A: If the cube is facing the user, then you can simply scale it (possibly the average between the front ... | |
| URL.openConnection() doesn't wait for page to load | 4/7/2010 |
| Q: I'm trying to get live feed for my server from this page ... A: Javascript is used to fill in the missing data. The url.openConnection() simply downloads the page, ... | |
| which programming language should i start with to be a good programmer? | 4/7/2010 |
| Q: I'm going towards learning my first programming language or computer programming as a whole. I'm not ... A: The advantage of Java is that the language is easy to read and understand exactly what is happening ... | |
| Part of Speech Tagging | 4/5/2010 |
| Q: I'm currently working on linguistic part. What i need to do is to tokenize the input string from ... A: HashSet is simple. When you iterate though all the words in your file, simply use ... | |
| java | 4/3/2010 |
| Q: is it necessary that methods present in one c++ program are same in similar java program A: Java and c++ have related methods, but how they are invoked is different. For a manual translation ... | |
| Part of Speech Tagging | 3/31/2010 |
| Q: I'm currently working on linguistic part. What i need to do is to tokenize the input string from ... A: I'm not fully sure what you are trying to accomplish, but the next step seems to be to load in the ... | |
| Reading Images an displaying an ImageIcon | 3/30/2010 |
| Q: I'm writing an application which reads and displays images as ImageIcons (within a JLabel#, the ... A: There really shouldn't be much difference in the memory requirement between using the file name ... | |
| polimorphism and abstract classes,methods | 3/29/2010 |
| Q: My question is about polimorphism.I have to write a program on NETBEANS which have a student class a ... A: Here is how you would use an abstract method: public abstract class CourseGrade { ... public ... | |
| About the Urdu display | 3/28/2010 |
| Q: ......... I am Java Programmer having some skills in core and Advance Java I am developing an ... A: Its hard to say, it might be more of a database configuration issue than anything. If you can enter ... | |
| Exit Applet Window Using Buttons | 3/26/2010 |
| Q: . I've some doubts on Applet.. Why i always extends Applet in my applet programs. I know every ... A: You can't close the applet window. You can pop up your own windows and close them, or have the ... | |
| extends Applet | 3/26/2010 |
| Q: . I've some doubts on Applet.. Why i always extends Applet in my applet programs. I know every ... A: Extending applet is required for your program to be used in a browser, if you were doing a desktop ... | |
| about the substring() method in java.. | 3/24/2010 |
| Q: i came across a method that reads line in java.. here is the code: void readLine(String code) { ... A: The .length is used on arrays, length() is a method in the String class to get the length. size() is ... | |
| how my button works in jframe? | 3/23/2010 |
| Q: please help me to fix my program. i want my button works in jframe. like if i click the button it ... A: One way to do this is to set up seprate JPanels with what you want each screen to look like. In your ... | |
| java(networking) | 3/23/2010 |
| Q: how DatagramSocket and DatagramPacket can be used to send information across two machines on a ... A: With a datagram socket?? You need to have a server on the same website that the applet was ... | |
| return certain values from array | 3/22/2010 |
| Q: I have a couple of questions. First, I will state what I am trying to accomplish: Write a ... A: Your sorting method seems fine. If you write the method that find temps over 100 you can either sort ... | |
| java(networking) | 3/18/2010 |
| Q: how DatagramSocket and DatagramPacket can be used to send information across two machines on a ... A: Create a DatagramSocket (with the port you want to use) on both the sending and receiving machines. ... | |
| NETBEANS | 3/17/2010 |
| Q: I just started using NETBEANS. However when ever I try to read from a file and save the text file ... A: The current directory that your program runs in is not the same as where count.dat is located in. ... | |
| java question | 3/11/2010 |
| Q: sir, I have taken 3 choice boxes,1st choice box-fontname, 2nd choice box-font style,3rd-choice ... A: This may be a problem with using AWT. AWT components are very operating system dependent and may ... | |
| Updating a status line (JLabel) | 3/11/2010 |
| Q: I have a program built with netbean ide 6.8 I constructed a GUI that has many elements and it all ... A: Let me reiterate: 1. Do not do processing that might take a long time on the event dispatch thread. ... | |
| Database Connection Using Access | 3/11/2010 |
| Q: i've some doubts regarding the database connection.. 1. Class.forName ... A: 1. When you ask for results from a database it gives you partial information, using the Resultset ... | |
| Help me | 3/10/2010 |
| Q: Sir, I'm doing Master of computer application(MCA) final year project. I have choosen a project ... A: I don't think what you want to do is really possible. You can guess a general location from an IP ... | |
| Updating a status line (JLabel) | 3/10/2010 |
| Q: I have a program built with netbean ide 6.8 I constructed a GUI that has many elements and it all ... A: You have to make sure that changes to the GUI happen on the event thread, and you don't have any ... | |
| java question | 3/9/2010 |
| Q: sir, I have taken 3 choice boxes,1st choice box-fontname, 2nd choice box-font style,3rd-choice ... A: This depends on how you are taking the values from the combo boxes and producing a font from it. The ... | |
| Java Graphics | 3/8/2010 |
| Q: I'm trying to create a program that outputs a clock. I'm calling a .bmp file, but at the moment, ... A: The problem is that you are creating a new JFrame and showing it every time your timer event happens ... | |
| Illegal start expression | 3/5/2010 |
| Q: Why the code won't compile? is it because 'public int day' is declared int? What missing statement ... A: The first reason this won't compile is that you are declaring the Day constructor inside your main ... | |
| Java Check if Palindrome using String Tokenizer? | 3/3/2010 |
| Q: I really need help! Im currently studying Java programming in college and really stuck with this ... A: 1. Create a StringTokenizer instance with your str value. 2. Do a while loop using hasMoreTokens() ... | |
| Question about polymorphism | 3/2/2010 |
| Q: I can't understand what is polymorphism? plzzzzz can u tell me about polymorphism in simple way with ... A: Polymorphism is simply a way an object can act differently depending on how it was created. A simple ... | |
| J2ME Midlet and Servlet | 2/27/2010 |
| Q: Am using J2MEWTK and i get this error when compiling my code: C:\Documents and ... A: Your compiler is using compliance 1.3, which is required to target 1.3. Targeting 1.3 may be ... | |
| Extends vs Implements | 2/25/2010 |
| Q: I've some doubts on the relation between extends and implements. What is the functionality of these ... A: You can use extends on another class, you can use implements on an interface. A Java class may only ... | |
| Hook vs Callback | 2/24/2010 |
| Q: Do you know what is the differences between Hook and Callback methods? Thanks, lzzzz A: Typically, a callback method is used to notify a listener of an event that happened. A hook on the ... | |
| Writing a class | 2/24/2010 |
| Q: I believe that I am on the right track but I am slightly confused on a few parts. I have two ... A: You are making this much more difficult than what it needs to be. The setDomain method should ... | |
| Web Browser | 2/22/2010 |
| Q: i am a student of Software Engineering and for my final semester i need a final project. i selected ... A: Firefox uses the mozilla gecko library which is written in c++. c++ is often used for programs where ... | |
| Constructor in Java | 2/20/2010 |
| Q: can U explains simple constructor? I a bit confuse to define it and where to define? Below my simple ... A: You can't overload the constructor since each character is a char. Requiring that 3 separate ... | |
| Constructor in Java | 2/19/2010 |
| Q: can U explains simple constructor? I a bit confuse to define it and where to define? Below my simple ... A: You should be using the SimpleDateFormat class: private static monthFormat = new ... | |
| Java questions | 2/18/2010 |
| Q: 1. can u tell me the difference between Swings and Applet? 2. What is the use of Collection class ... A: 1. swing (not swings) is a GUI library for Java. An applet is a container that allows awt (and ... | |
| system status | 2/9/2010 |
| Q: sir, is it possible to know the system idle time or current system status(whether it is in standby ... A: calling an operating system function might give better results. Java has no direct way to determine ... | |
| Please Help | 2/9/2010 |
| Q: , I was wondering if you could help me with this... on my laptop there is a VGA port, let's assume ... A: I'm not sure I understand what you want to do. If you connect a TV to a computer you can use it as a ... | |
| java thread output order | 2/5/2010 |
| Q: The possible execution order of a Java thread code,assuming s1..s5 are atomic operations is: ... A: Well, s1 always happens first. Then s2 or s4. s5 always happens after s4, and s3 always happens ... | |
| movement of circular nodes in java | 2/3/2010 |
| Q: Sir, how to move around 10 circular nodes in Java? movement of nodes both are in same direction and ... A: You can use sin and cos to determine where to draw each of these: int x = (int)(radius * ... | |
| Java Arrays | 2/3/2010 |
| Q: How to write a program that creates and displays an array of 30 random numbers from 1-100. I need ... A: The program would look like: import java.util.Arrays; ... Random random = new Random(); int[] ... | |
| studying a specific language | 1/28/2010 |
| Q: sir, My name is rameespp. I want to know about how to become a master in one of the language like ... A: Master is a strong word. Being the master of a language is often not a good idea. Instead you should ... | |
| Making a dictionary in JAVA | 1/21/2010 |
| Q: I am a computer science student from Kabul University, On the projects list, i chose to go with ... A: The choice of the data structure to store the dictionary in depends on if you want the user to be ... | |
| Auto levels | 1/20/2010 |
| Q: can you please give me a basic idea how to make auto-contrast and auto-brightnes in java wothout ... A: Part of the problem you may be seeing is that Java's graphics don't necessary represent a single ... | |
| java image to array | 1/19/2010 |
| Q: i, the problem is, I need to build an Auto Color Correction program in java, but I have 2 problems. ... A: That creates a new Image based on the old one. The old one is not touched. The one you have will ... | |
| java image to array | 1/19/2010 |
| Q: i, the problem is, I need to build an Auto Color Correction program in java, but I have 2 problems. ... A: If you simply want to adjust each pixel individually, the easiest way of doing so is: import ... | |
| PDF TO TEXT CONVERSION CODE | 1/16/2010 |
| Q: I am going to do a pdf to text converter project.I know only basic knowledge in php.Will u help me ... A: What you want to do is not easy, there is no simple solution, since PDFs are much more complex than ... | |
| rmi over internet | 1/13/2010 |
| Q: is it possible to make a connection between client and server in rmi through 'internet'. my code is ... A: There is no problem in doing this. It is possible there is an external firewall protecting you, or ... | |
| java | 1/12/2010 |
| Q: so I am having trouble with a morse code program. I want to write a program that will read morse ... A: Your code mostly seems fine... You don't need a switch statement though: MorseNode oCurrent = ... | |
| jdbc driver to connect to ms access database | 1/11/2010 |
| Q: I want to create a website that will run on an apache tomcat server. This website, when accessed ... A: You have: Database -> Web server -> User browser The web server is the server for the user's ... | |
| repaint() | 1/10/2010 |
| Q: i wanna use repaint() method more than one time at a time. It's immediate dear!please copy this code ... A: The main problem with your code is your paint method and your animation updater need to be synced ... | |
| JAVA | 1/10/2010 |
| Q: Sir, Belated Happy New Year Wishes. Will You Please mail me the difference between PrintStream & ... A: In your code the differences are that automatic flushing in PrintWriter happens only when you invoke ... | |
| Get Character & Clrscr (); | 1/7/2010 |
| Q: My Question Is that how we take character input frm user at runtime like string in java we Use ... A: Java only supports processing user input 1 line at a time, this allows maximum compatibility between ... | |
| Main class | 1/3/2010 |
| Q: class Main { class Sub { static public void main(String arg[]) ... A: Public classes may only be located in a java file by the same name. This is necessary for the java ... | |
| Mean, Mode, Median | 12/28/2009 |
| Q: I have ahow do you find mean, mode and median in an array in java? I know that to find the mean you ... A: mean is average, simply sum up all the values in the array and divide by the size of the array ... | |
| Main class | 12/27/2009 |
| Q: class Main { class Sub { static public void main(String arg[]) ... A: First: It is highly discouraged to put main methods in inner classes! If you make Sub static, then ... | |
| swiching among textboxes with a key | 12/27/2009 |
| Q: what i`m trying to do is designing a gui in java and i ve tried to add the ability of moving to next ... A: As with most GUIs, the enter key will activate the default button (by letting the parent component ... | |
| Main class | 12/26/2009 |
| Q: class Main { class Sub { static public void main(String arg[]) ... A: The rule for a main method is: 1. The method must be public, static, have a return type of void, and ... | |
| hangman | 12/24/2009 |
| Q: I sent an email earlier concerning my program. I managed to pass that part but now i have a new ... A: Instead of using a String to store the current display you could use a char[]. Start by filling the ... | |
| Hangman | 12/24/2009 |
| Q: Hey I was just wondering, if i wanted to get a random word how is it possible? I have to create a ... A: To pick a random word, you need 2 things. First, a list of random words. Second a random number ... | |
| Method overriding | 12/20/2009 |
| Q: In method overriding how access modifier change one form to another form? A: When you override a method, you can change the access modifier to a less restrictive one. For ... | |
| Parsing A Math Function | 12/19/2009 |
| Q: Hey, I'm trying to create a math parser where the user inputs a math function and the program will ... A: What you do is keep a stack of all the symbols (numbers and operators). After each operation, check ... | |
| Need to catch up on Java | 12/18/2009 |
| Q: I am currently in school to be a programmer, coming from little to no programming experience, I have ... A: There are many Java tutorials online (official sun tutorials) for various applications of the Java ... | |
| JAVA | 12/17/2009 |
| Q: I have one more question to ask u. First observe the program below. import java.io.*; public ... A: flush only ensures what you have sent to System.out is actually put on the screen. Its not necessary ... | |
| java | 12/15/2009 |
| Q: Well Anyways, I was pondering because I wanted to make this program. This program involves taking ... A: This is a standard assignment for using the greedy algorithm. If you use this you often get a good ... | |
| JAVA | 12/13/2009 |
| Q: I don't know who you r. I have a small doubt in java. Can you Explain this. My question is about ... A: A field is a variable that is outside of a method. Static means the field is independent of any ... | |
| Java Sorting | 12/10/2009 |
| Q: I’m writing a simple sorting program in Java and I’m stuck. Well it’s not simple for me. Im ... A: You should put the numbers into an array, and then sort them as your assignment told you to do so. ... | |
| running a process in a remote system | 12/9/2009 |
| Q: how to download a part of the file using java program...I am developing a download manager...I want ... A: There are various ways of doing this depending on your requirements. First, a Java only solution is ... | |
| getting ip of a remote system in the same network | 12/8/2009 |
| Q: how to download a part of the file using java program...I am developing a download manager...I want ... A: For the first question, use jmap, it is a standalone application but source code is included if you ... | |
| java download code | 12/7/2009 |
| Q: how to download a part of the file using java program...I am developing a download manager...I want ... A: I would suggest you get a 3rd party library to help you out such as ... | |
| java | 12/7/2009 |
| Q: Well I have this problem. There is a game that I am trying to do called the Game of War. Two players ... A: I can give you a few pointers, but I'm not going to debug though all your code and find what you ... | |
| Parameter passing | 12/6/2009 |
| Q: I do not fully understand parameter passing...is it that when you call a method with parameters, but ... A: values are passed by value. If you reassign the value (using someParam = someVal), the one that was ... | |
| Method classes vs. Object classes | 12/5/2009 |
| Q: I'm really confused about method classes and object classes. I'm also confused about what is static ... A: Static methods don't have a 'this'. Their location in a class is simply for naming purposes and so ... | |
| Arrays in methods | 12/4/2009 |
| Q: I have a question--for our upcoming final one of the practice questions asks us to write a method ... A: Then the method I provided (getNext()) will do as you described (use Object instead of String). Or ... | |
| Arrays in methods | 12/3/2009 |
| Q: I have a question--for our upcoming final one of the practice questions asks us to write a method ... A: I'm not sure what is meant by 'an array'. Chances are they mean a global array: public class ... | |
| Chat messenger with RMI | 12/2/2009 |
| Q: I´m implementing a chat messenger with RMI and I don't know how can I get a client to receive a ... A: RMI is designed to allow clients to have a server run a request on their behalf. Having RMI used in ... | |
| Java Programming | 11/29/2009 |
| Q: Well anyways I am having trouble understanding something. MY teacher asked me to write a class ... A: I'm not entirely sure what your teacher wants either. I would take the part of the code from ... | |
| Java - loop prob. | 11/24/2009 |
| Q: I hope you could help me here because this is the one causing the delay for my project..please help. ... A: Using double as loop invariants is really a bad idea due to possible rounding. As to why your output ... | |
| Dictionary with GUI | 11/24/2009 |
| Q: I want to make a complete English dictionary.I want to make it using Netbeans IDE.Dictionary will ... A: Using a HashMap is simple. Create one and use the put method to associate a key (word) with a value ... | |
| Using Super Reference | 11/23/2009 |
| Q: Hard to explain question without looking at code first, so please do (not the actual code, but the ... A: Due to the way polymorphism works, once you create a subclass and make a method that has the same ... | |
| please help | 11/22/2009 |
| Q: I really suck in Java and I took the class in college by mistake and now I will fail unless I get ... A: This is a very simple program requiring 2 for loops (one inside the other). I cannot give you much ... | |
| Max integer value | 11/22/2009 |
| Q: I need to know how to do dynamic program on collatz conjecture. i.e for x = 1 to maxofinteger ... A: First, if you are getting an OutOfMemoryError, you can try increasing the amount of RAM the JVM will ... | |
| Max integer value | 11/20/2009 |
| Q: I need to know how to do dynamic program on collatz conjecture. i.e for x = 1 to maxofinteger ... A: You can use long (instead of int), which has twice as many bits and a much bigger value (big enough ... | |
| Java Fundementals Book program 5-4 | 11/19/2009 |
| Q: hey the porgram problem i have is this, my AP CS teacher aasked us to try and write a program like ... A: You need a class Dice. That class has a single field current, it should be private. Add a method to ... | |
| Displaying Bitmaps | 11/19/2009 |
| Q: I just ran into this previous answer you gave: http://en.allexperts.com/q/Java-1046/java-swing-2.htm ... A: Its pretty easy to implement your own zoom. You can simply: float scale = ...; Point scaleCenter = ... | |
| SCJP | 11/18/2009 |
| Q: This program will not compile. Cannot find symbol: variable passengers. /* A program that uses the ... A: You have: class Vehicle2 { int passengers; // number of passengers int fuelcap; // fuel ... | |
| Java Palindrome No. | 11/18/2009 |
| Q: please assist me in making a java prog. for checking a palindrome no......and please tell me if the ... A: To 'peel' off a digit from a number you can: int num = ...; int remaining = num; while(remaining != ... | |
| SCJP | 11/17/2009 |
| Q: This program will not compile. Cannot find symbol: variable passengers. /* A program that uses the ... A: You are creating a new instance of Vehicle, not Vehicle2 as you have declared above. The compiler is ... | |
| java or C++ security comparison | 11/17/2009 |
| Q: I want ot know when it comes to security, that is securing your applications and softwares and ... A: Java will be a better choice as one of the primary focuses of Java is security. Most exploits in ... | |
| Java Programming | 11/17/2009 |
| Q: Well I have question than I am curious about. I want to know if it is possible to write a method ... A: To determine if a number is a power of 2 you can use the trick: if((n & -n) == n) { //power of 2 ... | |
| Java DesktopPane | 11/15/2009 |
| Q: Sir i m develping desktop application in netbean. first problem is that of ApplicationView ... A: 1. I'm not sure what the ApplicationView class is. It is not a class in the standard Java API, so I ... | |
| Easy Counting Program? | 11/14/2009 |
| Q: I need some hints on how to proceed to write the program, specifically on how to set up the ... A: The first thing you should notice is that if some set is not valid, than all super sets of that set ... | |
| Logic circuit | 11/8/2009 |
| Q: Sir, plz am jus a beginer in java, i want to write a program using swing gui to build logic circuits ... A: This problem is best solved by simply doing your own drawing. Nothing in swing will help you much ... | |
| Compare two .CSV | 11/7/2009 |
| Q: I Want to compare two .csv file and check..if the entries are equal Well not exactly.equal..with 3% ... A: This is pretty simple: First create a Reader to read text in: BufferedReader reader1 = new ... | |
| javac | 11/6/2009 |
| Q: Im currently teaching myself java from different tutorils on the internet. verytime I try compiling ... A: when you install the Java SDK it does not add the compiler to the PATH, only things on the PATH and ... | |
| Big O Notation problem | 11/2/2009 |
| Q: I wanted to evaluate an algorithm and my adviser told me to use the Big O notation. I really don't ... A: Your processor can probably help you better than I can. The Big O of an algorithm is a calculation ... | |
| which language to use for developing apps | 10/31/2009 |
| Q: I've a strong attitude towards programming, software engineering. I want to develop some cool apps ... A: I use Java since it runs pretty fast without having many of the pitfalls of c++. The language you ... | |
| JLabel in JTable | 10/30/2009 |
| Q: Harper I m Nirav Raval Frm India. At now i m develop one Windowbased Application in java ... A: Set the default renderer (for the Object class) in your JTable (using setDefaultRenderer) to a ... | |
| Array assignment | 10/28/2009 |
| Q: i am in a beginning level Programming class and we were assigned to basically, from my ... A: The array classes don't have any special implementation of toString(), you can use: ... | |
| socket programming | 10/28/2009 |
| Q: I ran simple example of socket programming in Java that caught it from www.sun.com (KnockKnockServer ... A: You can either debug the application in an IDE (such as eclipse or netbeans) and hit the suspend ... | |
| Exception handing | 10/28/2009 |
| Q: i've to know what is the difference between PrintStackTrace and Exception and getMessage in ... A: printStackTrace method prints the message and the stack of the current thread when the exception was ... | |
| about database driver connection | 10/24/2009 |
| Q: heyy im tryin to connect the database by java program and retrieve the table details but im not able ... A: You are getting an exception because the version of javac you are using is newer than the version of ... | |
| file io | 10/22/2009 |
| Q: I was looking at some examples on basic file IO in java, but what i notice is that there are many ... A: There are various levels of efficiency (hence there are many ways of reading/writing a file). For ... | |
| memory efficiency | 10/21/2009 |
| Q: let's say I wanna use an object, say an arraylist, several times would this be memory efficient?: ... A: This depends if you expect the arraylist to have about the same number of elements each time. When ... | |
| socket programming | 10/19/2009 |
| Q: How can i start socket programing in Java? I must write one program that some devices send and ... A: Create a ServerSocket object that listens to incoming traffic on the initial receiver of the data, ... | |
| Java RTE in IE8 | 10/17/2009 |
| Q: In the Java Control Panel (in Vista Control Panel) in the Advanced tab, the fourth setting down is ... A: You are running the Java control panel as a regular user, therefore you cannot disable Java for ... | |
| javascript popup | 10/16/2009 |
| Q: I have a problem with a script, I downloaded this script and I'm trying to use it on my website: ... A: Just have the address for the hyperlink be the code that opens up the box: e.g. <a ... | |
| Java RTE in IE8 | 10/15/2009 |
| Q: In the Java Control Panel (in Vista Control Panel) in the Advanced tab, the fourth setting down is ... A: Java has nothing to do with Flash. If you are having problems installing Flash you are looking in ... | |
| palindrome in java | 10/15/2009 |
| Q: import java.io.* public static void main(String arg[]) { String a; System.out.println("Enter your ... A: You should explicitly state yourHow do I reverse a String? Answer: ... CharSequence reverseString = ... | |
| Print top 2 scores | 10/14/2009 |
| Q: I was looking through the program on this website and I have a question .....how can u change the ... A: You could keep track of the highest score and second highest score as all the names are being ... | |
| or statements | 10/10/2009 |
| Q: For my programming assignment I have to make a game that is similar to Yahtzee, so the player will ... A: For a small set of dice you have, not really. The order of the dice doesn't matter, so you could ... | |
| swing component | 10/8/2009 |
| Q: advantages of using JTabbedpane and JScrollPane in designing GUI? what is plugable look and feel? ... A: The JTabbedPane allows multiple windows to be grouped into a single window, selectable with a tab. ... | |
| Decimals in numbers | 10/6/2009 |
| Q: import javax.swing.JOptionPane; public class Ljw02mathIoGui { public static void main (String ... A: First, you need to do floating point division instead of integer division. You can do this by ... | |
| java | 10/6/2009 |
| Q: Artemus I've finished some programs using netbeans ide in java it is supposed to be a battleship ... A: The possible problems are: 1. when you double click on a jar, by default the command that runs is ... | |
| J2me | 10/4/2009 |
| Q: i am at the 5th year in the informatic faculty i am thinking about graduation project i am thinking ... A: Doing face reconnection can be a processor intensive task (provided you can interface with the ... | |
| need ur help | 10/3/2009 |
| Q: what is difference between implicit type casting and explicit type casting? A: Implicit type casting happens when you assign a value to a variable of a super type. E.g. String s = ... | |
| Java, but not sure what you'd classify this question as. | 10/2/2009 |
| Q: Ok, I'm a Computer Programming student (my advisor talked me into changing my major from hardware to ... A: Typically the way animation is done is by using a Timer (in javax.swing, not java.util), that ... | |
| java | 10/1/2009 |
| Q: Artemus I've finished some programs using netbeans ide in java it is supposed to be a battleship ... A: What you want to do is export your project as a jar file. Once it is a jar file, you should (and ... | |
| editing a specific line in a Table | 10/1/2009 |
| Q: Hey Artemus, Hows it going.. im experiencing a problem trying to use the update method in results ... A: The primary reason this would not work is, that there is no entry with Client_ID=idNo already in the ... | |
| Java programming in grid | 10/1/2009 |
| Q: I want to display LAN connected PCs which are in the grid environment.How to display LAN connected ... A: Getting a list of computers on the LAN is an operating system dependent function. A windows network ... | |
| Classpath Problem | 9/30/2009 |
| Q: I was trying to create a new package. My java is saved in C:\Program Files\Java\jdk1.6.0_11. I just ... A: You should not put your java file in the jdk directory, create another directory somewhere else for ... | |
| block hardware | 9/29/2009 |
| Q: I am searching a code in java for disable and enable the MOUSE ,KEYBOARD,CD-ROM ,USBPORT. but i ... A: These operations are operating system dependent (and would require administrator privs). Why would ... | |
| Communicating two servers | 9/29/2009 |
| Q: I need to telnet a destination ip from a source ip through a java program and both the ip are remote ... A: Using sockets is seprate from telnet. A telnet library will set up and sockets and everything for ... | |
| java,awt.Graphics class error | 9/29/2009 |
| Q: I am in the process to create a Game . I want to know , how do we make images move dynamically ... A: Use the javax.swing.Timer class. You can set up an action that happens every so often. In your ... | |
| Opening a specific page of a .pdf file by click of button in java | 9/29/2009 |
| Q: Could you please provide me a method to open a particualr page in a .pdf file. Scenario : I have a ... A: You can't really do it the way you are trying, since you are basically asking adobe acrobat (or ... | |
| reversing a number using a while loop | 9/27/2009 |
| Q: How do I reverse a number using a while loop ? can you help me write the code (not necessarily the ... A: By using the mod (%) and div (/) operators you can peel off the digits of the number, then you ... | |
| editing a specific line in a Table | 9/26/2009 |
| Q: Hey Artemus, Hows it going.. im experiencing a problem trying to use the update method in results ... A: You can use an update query, provided that WO_Number is unique: PreparedStatement query = ... | |
| Help Please Sir/Madam | 9/25/2009 |
| Q: Sir i have a small problem (i guess for you all out there) i have a class as shown below... from ... A: I'm not sure how the data you get is translated into text. Some of it may be text, but some of it ... | |
| java | 9/24/2009 |
| Q: Well so far I have the following code: however I want my program to only print the numbers that when ... A: In your case, since you are only going up to 10000 you only need primes up to 36 (9999 adds up to ... | |
| interactive website | 9/22/2009 |
| Q: How are you? Thanks for taking questions. I would like to write a photo webiste where a user could ... A: You will probably need to know both Java (for the backend) and Javascript (for the frontend). It is ... | |
| String transformation | 9/19/2009 |
| Q: There is a program where I have to put the following in a dat file. Sample Input: 3 ... A: You can use a StringBuilder to make a modifiable string. First create a BufferedReader that wraps ... | |
| Java Programming | 9/15/2009 |
| Q: I was just wondering how to make a program that will input an array of strings, using permutation ... A: First you would put the words into an array. Then you will need to create another array that ... | |
| Java Printing of JFform | 9/14/2009 |
| Q: I am working on a java application which allows the user to prepare and print invoice sheets and ... A: When you implement the setValueAt, and once a value for both the quantity and unit price is entered ... | |
| Java Printing of JFform | 9/12/2009 |
| Q: I am working on a java application which allows the user to prepare and print invoice sheets and ... A: You can use the print() method of JTable to simply print that. Printing something else, will require ... | |
| Java | 9/12/2009 |
| Q: I have a question on how to write a program can you help me. I have to write a program that will ... A: What you have will generate random characters, but it is not optimal for doing so as a String is ... | |
| Testing Efficiency | 9/11/2009 |
| Q: I'm trying to re-learn programming, but was wondering what are some ways of testing efficiency & ... A: effciency and speed are often the last things you test in a program, and you only do that if these ... | |
| Solution for a Java Problem | 9/10/2009 |
| Q: Respected Sir, Instead of doing: HSSFRow row1 = sheet.createRow((short) 1); HSSFRow ... A: I think you want to do something like: HSSFRow[] rows = new HSSFRow[4]; for(int r = 0; r < ... | |
| JAVA | 9/10/2009 |
| Q: Sir, I am developint one window base application in java and I am using JInternal frame in this ... A: There are many ways to do this. You need to have some common class that keeps a reference to both ... | |
| Need a solution for coding in Java | 9/9/2009 |
| Q: Respected Sir, I have a Java program which reads the cell contents of Ms Excel.I am ... A: You will have to get an external library if your data really is in Excel format. If possible, you ... | |
| Java | 9/8/2009 |
| Q: I am trying to design a program in Java that would block a site and redirect it to a page displaying ... A: Java is a poor language choice for any application that interacts directly with the operating system ... | |
| encoding in client /server using steganography | 9/3/2009 |
| Q: could u send me good algorithm codes on java to establish the connection A: since steganography generally requires some other form of communication to piggy back on, you will ... | |
| Sql Time problem | 9/1/2009 |
| Q: I'm experiencing a problem with the toString() method in the java.sql.Time class.. There seems to be ... A: This is most probably caused due to t1 being null. If t1 is null, then attempting to call toString() ... | |
| advantage of becoming a SCJP | 8/31/2009 |
| Q: I am currently studying in BITS Pilani,Pilani campus. I want to know whether i should give SCJP(Sun ... A: I have not taken the SCJP, nor can I tell you what fees there are in India. What I can tell you is ... | |
| Java troubleshoot | 8/30/2009 |
| Q: I recently downloaded the latest JDK, which is version 1.6.0_16. The software is stored at C:Program ... A: You first need to compile the program, the compiler javac is located at c:\program ... | |
| Netbeans 6.0 Java- Installation File Making | 8/26/2009 |
| Q: I have just completed a window based java project in Netbeans IDE 6.0. Now I want to distribute this ... A: JRE is standard software, it is common for computers to have it, and you can get Java installers ... | |
| Java- Reports | 8/24/2009 |
| Q: I am developing a window based paryroll System in Netbeans IDE 6.0 for a firm. In this project I ... A: You can use a JTable to display the results of a query. Simply create your own TableModel for the ... | |
| JTable using vectors or arrays? | 8/21/2009 |
| Q: I am currently trying to make a Table displaying inputted information in the table cells containing ... A: You should use the DefaultTableModel. Simply create a DefaultTableModel, then create the JTable ... | |
| java | 8/18/2009 |
| Q: how does a class accomplish data hiding? A: Data hiding is done by making a field non-public. When a field is non-public only some code can ... | |
| java | 8/18/2009 |
| Q: Why is Java known as plateform-neutral language and How is java more secured than other language? A: Java programs operate under a virtual machine. The virtual machine acts as an intermediary between ... | |
| java | 8/18/2009 |
| Q: How are Data and Methods organized in an object-oriented Program ? A: When an instance of a class is created its memory is usually laid out as: fields0 //All the fields ... | |
| check the string is intigerformate | 8/18/2009 |
| Q: sir,i have one string, String s1="2009081814421284371053060060"; now i have to check inside of s1 ... A: Integer characters start at '0' and end at '9' Simply do: if(ch < '0' || ch > '9') { //invalid ch ... | |
| JDBC date entry error | 8/17/2009 |
| Q: I am experiencing a problem with my code, I am trying to enter data into an access database called ... A: It is possible you are using a reserved word in access. You can avoid this problem by wrapping these ... | |
| problem in the outuput of an applet using thread | 8/16/2009 |
| Q: import java.applet.*; import java.awt.*; /*<applet code=horse width=200 height=200> </applet>*/ ... A: The Thread.sleep method is a static method. When you call it only the calling thread pauses. As a ... | |
| JDBC date entry error | 8/15/2009 |
| Q: I am experiencing a problem with my code, I am trying to enter data into an access database called ... A: Sorry for the confusion; the date parameter is a java.sql.Date rather than a java.util.Date. You ... | |
| JDBC date entry error | 8/13/2009 |
| Q: I am experiencing a problem with my code, I am trying to enter data into an access database called ... A: It is possible that the database doesn't like the date format. To avoid many of these issues you ... | |
| Mac Id using Java | 8/12/2009 |
| Q: Sir i want to use mac id in java. prog. for providing security. Can u give me the code. for getting ... A: You can use the java.net.NetworkInterface to access the mac address. First you need to get the ... | |
| java | 8/7/2009 |
| Q: what is the function of 'this' keyword? in the command: b.addActionListener(this) what does 'this' ... A: super is the same as this, except that it is used to call methods in the parent class that have been ... | |
| JAVA Media File | 8/7/2009 |
| Q: Sir. I want to make a media file in java. SO please tell me how I can i play a songs in java ... A: This generally depends on what the format of the songs are. For mp3s you will need to get a an extra ... | |
| java | 8/7/2009 |
| Q: what is the function of 'this' keyword? in the command: b.addActionListener(this) what does 'this' ... A: I'll assume that b is a JButton. In which case, JButton's class looks like: public class JButton ... | |
| java GUI that stimulates ATM | 8/4/2009 |
| Q: i need to creat 1 JAVA applet as ATM GUI. Need to put username and pin. Then user balance is ... A: This depends a lot on how you want your GUI to look. Does it look just like an ATM, or do you assume ... | |
| MS DOS | 8/1/2009 |
| Q: how can i make a program using ms dos which you need to enter a letter ,if i type small letter a-z ... A: In Java you can't just ask for 1 character at a time (not without using code from C/C++). You can ... | |
| distributed computing query | 7/31/2009 |
| Q: sir,i want to make a project on distributed computing such that i have a large set of data and if i ... A: Distributed computing is a very large field, there are many ways to implement such a solution. One ... | |
| function that returns | 7/26/2009 |
| Q: sir, I like to know the function and the object that I need to use to get my present ip ... A: It is possible that the IP address you are looking at might be in the IPv6 form: x:x:x:x:x:x:x:x ... | |
| function that returns "my ip"? | 7/23/2009 |
| Q: sir, I like to know the function and the object that I need to use to get my present ip ... A: What you have works pretty well, provided that the computer is connected to the internet and is not ... | |
| Widgets toolkits in java | 7/22/2009 |
| Q: I am currently making a GUI using the Swing package but i am looking for a way to make my windows ... A: First if you aren't using the native look and feel try that, it is a decent substitution of the ... | |
| Report Development | 7/22/2009 |
| Q: Harper, I am developing a window based software in Netbeans 6.0 IDE in Java. Now in ... A: There are various examples on the web that explain how to do this. e.g. ... | |
| JDK 6 | 7/22/2009 |
| Q: I'm currently studying Java from http://www.cs.princeton.edu/introcs/home/ I stumbled upon this ... A: Chances are you have a java (or class) file located in your Java directory called Integer.java which ... | |
| java WebcCawler | 7/21/2009 |
| Q: did you ever solve the problem at http://en.allexperts.com/q/Java-1046/2008/3/Java-WebCrawler.htm ? ... A: I think the answer I provided: guessContentTypeFromStream is a best guess about the content type and ... | |
| "clear screen" how in java and java script? | 7/21/2009 |
| Q: sir, I like to know the Command used(if not the way) to clear screen when program is running in ... A: Java doesn't have support for advanced console functions like clear screen. If you need to do ... | |
| Java | 7/16/2009 |
| Q: I am curious, is it possible to inject client side code into a server side Java Web Application? If ... A: In general no, although this depends on how the Java server was coded. You can put security holes ... | |
| need help imediatly | 7/16/2009 |
| Q: heh mate, well i am working on project in which i want that the events fired by internet explorer ... A: Java components can react to key events and mouse events when the mouse or keys are pressed when the ... | |
| project | 7/15/2009 |
| Q: i have project(made in java)but i can't know how to open the project because there are no. of class ... A: class files are compiled files, the source files are java files. The 'project' file depends on the ... | |
| upload my pdf partially on my server | 7/15/2009 |
| Q: sir ,please tell me how can i partially upload my pdf file on my server so before fully upload first ... A: I don't know how your server operates, but if you have an open stream from the client while ... | |
| upload Zip file | 7/14/2009 |
| Q: sir, In my web appliaction i want to upload only pdf file.but if i have EXE or TEXT File its also ... A: When you have your InputStream for a zip file, just feed it into a ZipInputStream and read from that ... | |
| upload pdf file | 7/13/2009 |
| Q: sir, In my web appliaction i want to upload only pdf file.but if i have EXE or TEXT File its also ... A: You have to allow at least a partial pdf upload, as you will have to look inside the file to ... | |
| JAVA | 7/1/2009 |
| Q: I want to create a java program using a JFile Chooser.Actually I wanted a JFrame containing a JMenu ... A: If you just want the file names of those in the chosen directory, then you can use String[] ... | |
| JAVA | 6/25/2009 |
| Q: I am trying to convert a java program into a standalone application.please help with the code of the ... A: If you want it to run as an Applet you can package your classes in a jar and distribute an html file ... | |
| Code of compiling a .java to .class file | 6/24/2009 |
| Q: I received the code: Process javacProcess = Runtime.getRuntime().exec("java -cp <location to ... A: tools.jar has been around for quite a while. If your using windows, you can find it in c:\program ... | |
| JAVA | 6/24/2009 |
| Q: I am trying to convert a java program into a standalone application.please help with the code of the ... A: What you need to do is change the extends Applet to extends JFrame (you could just use a normal ... | |
| Compile a .java file to .class within a java application. | 6/23/2009 |
| Q: I have a java application that creates a jar file, the manifest file, but doesn't compile to .java ... A: To do this you need to include the tools.jar in your application. tools.jar is usually located in ... | |
| JAVA | 6/22/2009 |
| Q: I want to zoom in & zoom out an image in a JFrame using 2 Jbuttons "+" & "-" respectively.Please ... A: I think I have a better understanding of what you are trying to do now. Here is a sample piece of ... | |
| Help me | 6/22/2009 |
| Q: Java Script is better than other scripting languages for web design ???? plz give me anwer in detail ... A: For client side scripting you really don't have much choice, as Javascript is the most widely ... | |
| JAVA | 6/22/2009 |
| Q: I want to zoom in & zoom out an image in a JFrame using 2 Jbuttons "+" & "-" respectively.Please ... A: What you will need is two variables, one to store the transform, and another to store your zoom ... | |
| JAVA | 6/19/2009 |
| Q: I want to zoom in & zoom out an image in a JFrame using 2 Jbuttons "+" & "-" respectively.Please ... A: Use the Graphics2D.drawImage(Image,AffineTransform,ImageObserver) method. For the AffineTransform ... | |
| Java Graphics | 6/18/2009 |
| Q: I want to be able to change an image's (gif or jpg) background and foreground color. I also want to ... A: I'm not sure what you are trying to accomplish. An image such as gif or jpg doesn't have a ... | |
| HTTP POST | 6/17/2009 |
| Q: What is the best way for sending a ZIP file over HTTP POST from one servlet which just collects it ... A: Sure you can. See: http://www.theserverside.com/tt/articles/article.tss?l=HttpClient_FileUpload Its ... | |
| the frame does not show | 6/17/2009 |
| Q: the given code does not show any runtime or compile timne errors.however it only shows a plane frame ... A: You have a size set for the frame, not a preferred size for the cirarc1 component. I would: 1. ... | |
| How can I see big values defined as BigDecimal | 6/13/2009 |
| Q: Let x = 2 to power 20000 Let y = 2 to power 3209 Then z = x multiply y = 2 to power 23309. I ... A: Chances are that the operation failed, possibly due to running out of memory (are you sure no ... | |
| sockets and thread | 6/12/2009 |
| Q: can we have a socket in a class that is not a thread? i want the socket to continually receive ... A: There is nothing really special with the main thread, you can do anything on any thread. However, ... | |
| stack overflow error | 5/29/2009 |
| Q: I am on a course to learn Java and as homework I have too modify an subclass of Account(a bank ... A: A stack overflow error generally means you have one method calling itself (or one method calling ... | |
| Java | 5/26/2009 |
| Q: I have Windows XP and every once in a while a Java Update pops up when I activate my laptop. It's ... A: You can go into the Java control panel and under the update tab disable automatically checking for ... | |
| java swing gridbaglayout | 5/23/2009 |
| Q: In GridBagLayout can i assign more then one button in one grid cell?? A: Yes, you could increase the gridwidth or gridheight for the the buttons so they take up multiple ... | |
| Arrays as Instance Variables in Java | 5/21/2009 |
| Q: I need to store and later use an array in different functions of a class body in Java. In C/C++, I ... A: All Objects in Java (including arrays) are passed by reference. When one method changes the array, ... | |
| electronics-Boolean logical truth tables | 5/19/2009 |
| Q: I am studying java programming as a hobby. I indirectly need the answer of this question. What is ... A: When you distribute NOT over a group you put NOT on each element and change AND to OR and OR to AND. ... | |
| Java- JAR File | 5/17/2009 |
| Q: Harper I've just completed my project in java. And now i want to make executable JAR file. ... A: You can try exporting with the generic jar option instead of the executable jar, this will give you ... | |
| Java will not start under Vista Home Premium | 5/16/2009 |
| Q: I have installed Java (jre6-u13) on a new laptop (Acer Aspire 5520G with AMD Turion dual processor ... A: Either something is screwed up in the installation, or there is some kind of conflicting component. ... | |
| getting keys from a multimap if the value is specified | 5/15/2009 |
| Q: I have a multimap of this format... Code: import java.util.ArrayList; import java.util.HashMap; ... A: A map is designed to map keys to values. You can iterate over the entrySet in the map and determine ... | |
| Using the break statement in a while loop | 5/14/2009 |
| Q: Since using the break statement is considered bad code except for in swithch statements, how could ... A: One way would be: int i; for(i = 0; i < names.length && !names[i].equals(searchName); i++) ; ... | |
| How to create an executable file for a Java program? | 5/13/2009 |
| Q: I have written a Java program using NetBeans IDE and want to send it to my friend such that he can ... A: Just make sure when you export your program to a jar file you do not export the java files. This is ... | |
| java queue | 5/11/2009 |
| Q: ..but it doesnt seem to be working at all ..could you please help me and see what the problem is? ... A: There are a few problems with this code: 1. emptyQ should check if last is -1, not if the buffer ... | |
| Animated GIF image in Buffered Image | 5/4/2009 |
| Q: I want to read an Animated GIF from a file into BufferedImage and then write on a Jlabel in JFrame. ... A: You can't load all of an animated gif into a buffered image as BufferedImage only supports static ... | |
| java method | 5/4/2009 |
| Q: public class Customer { // Instance Variables (you fill in) private Time24Hour arrival; ... A: I have no idea what Time24Hour class is. You generally don't store the difference in time in a Time ... | |
| java constructor | 5/2/2009 |
| Q: i am just wondering, what is the problem with these codes i had? public class Queue { // ... A: The reason your code doesn't compile is that you are assigning an index of an array which is a Queue ... | |
| User InterfaceDemo | 4/29/2009 |
| Q: I am a graduate level computer student. i want to do a online live security project in Java(using ... A: This may be difficult to do as you probably don't want the camera to trigger on small changes ... | |
| Bigram count | 4/28/2009 |
| Q: I am writing a java program that is suppose to read a text and return the 15 most common bigram (th, ... A: In your while loop you want to keep track of the previous character, then check that and the current ... | |
| Counter/tickers | 4/27/2009 |
| Q: I am looking into adding a feature to my website that adds a number by 1 every 11 minutes 7 seconds. ... A: I'm not an expert on javascript, rather I'm an expert in Java. But to try and answer your question, ... | |
| Help me with static variable | 4/26/2009 |
| Q: I need help. Ill go straight to the point: I have 3 classes: [QUOTE][B]public class AssembledPart ... A: The primary problem is that getAvailForAssembly is static. The only way you can make this non-static ... | |
| Java programming | 4/25/2009 |
| Q: First of all is Java the best and most latest programming language? And secondly I'd like to know if ... A: First of all is Java the best and most latest programming language? There is no best programming ... | |
| java hangman | 4/21/2009 |
| Q: I am trying to write a java hangman game but i am very confused. I think the way i need to do it is ... A: I really don't understand what you mean by which letter is 'shown' first. You can use the Random ... | |
| Question regarding permutations of functions--contd | 4/17/2009 |
| Q: Regarding my previous question...I have to use Java Reflection for invoking the functions. "I have ... A: I would look at the java reflection tutorial: ... | |
| java hangman | 4/16/2009 |
| Q: I am trying to write a java hangman game but i am very confused. I think the way i need to do it is ... A: You can do it with arrays. You will also need a second array that masks what characters you show and ... | |
| Huffman Question | 4/15/2009 |
| Q: Hope you are fine and in good health, My questions are: 1. can we make a wizard to a java program, ... A: Generally the bits are simply ignored you can set them to 0. Note that you do need an EOF symbol ... | |
| Java Swings | 4/15/2009 |
| Q: How to dynamically populate the values from the database into JComboBox. Thanks and Regards Vinod A: If you are repopulating data, first make sure you call removeAllItems() from the JComboBox to start ... | |
| color of buttons | 4/14/2009 |
| Q: i'm using CodeWarrior and i'm using applets... i have made buttons but i wish to change the color of ... A: If you simply want to change the color, you can set the background color of the button to something ... | |
| image | 4/14/2009 |
| Q: Can we get an image as output when we give its pixel values as input...please give me the java code ... A: This somewhat depends on the format of the input, the kind of image you want (e.g. do you need ... | |
| Array | 4/13/2009 |
| Q: so I have written a program which reads from a file and does pay,update and info transactions. The ... A: You are searching though the array, but you are not making sure you don't go outside the bounds of ... | |
| Setup wizards, and registers | 4/12/2009 |
| Q: Hope you are fine and in good health, My questions are: 1. can we make a wizard to a java program, ... A: You can have java do stuff like this by executing native operating system commands. However, by ... | |
| modifying an existing file in java. | 4/9/2009 |
| Q: I'm rather new to java and wanna know how to modify an existing file. I have this text file called ... A: Generally text files have to be rewritten from scratch when changed, simply overwrite the document ... | |
| Java Graphics API | 4/6/2009 |
| Q: Hola! I'm making a virtual tour program of our school. I plan to make 3d models of the buildings ... A: I haven't used wrl files, but it seems that ... | |
| clear screen applet | 4/2/2009 |
| Q: sorry i m not specify .. now... when ever click on clear button then it clear the applet screen and ... A: You should only be using the command prompt in applets for debugging information. If you want, you ... | |
| Java | 4/2/2009 |
| Q: need help creating the below java program: Read in an integer and output it in one or more ... A: Reading in a number is easy, just use: int num = Integer.parseInt(numStr); Writing a number in a ... | |
| Encrypt and Decrypt codes | 4/1/2009 |
| Q: I just need to ask a question about encryption and decryption. How could you improve the codes to ... A: You can store the random instance as a static variable. Or you could create a new random instance ... | |
| Encrypt and Decrypt codes | 3/31/2009 |
| Q: I just need to ask a question about encryption and decryption. How could you improve the codes to ... A: I'm not sure I understand your question. You can use the BigInteger to store very large numbers. ... | |
| allign the string output | 3/30/2009 |
| Q: Could you help me with the following please? I am printing(outputting) from a string linkedList both ... A: You could use tab, which will work fine if you import the text file into a spread sheet program like ... | |
| comparing 2 text files | 3/24/2009 |
| Q: Could you provide me with some examples and codes (links or tutorials)on how to compare 2 text ... A: If you just want to check to see if the files are exactly identical, you can read each file byte by ... | |
| java | 3/19/2009 |
| Q: explain java is compile or interpreter language? A: Java source code is compiled into an intermediate language (bytecode) that is easily translatable ... | |
| JSP login screen | 3/15/2009 |
| Q: .can you teach me on how to create login page, when the login is successful, it will redirect to ... A: Although I don't know much about JSP, you can take some of the code from: ... | |
| Java arrays | 3/11/2009 |
| Q: I'm in an algorithm analysis class and in order to show the efficiency of the algorithm that I am ... A: The maximum value of an int (which is the max value of an array) is 2,147,483,647. If you are using ... | |
| readLine() java | 3/11/2009 |
| Q: May I ask what your thesis is for your masters? I am studying CS as well. I can't wait to start my ... A: Just as you can read in each line of a file you can write it in a similar way you read it. For ... | |
| Mouse clicks | 3/9/2009 |
| Q: we are making a hexagon minesweeper game in a java applet, and we wondering how to differentiate ... A: You can use e.getButton() to determine the button. MouseEvent.BUTTON1 is the left mouse button, ... | |
| Button Shapes | 3/6/2009 |
| Q: I was wondering how i can make hexagon shape buttons in java applets, we are using this to make a ... A: You can't use a JButton for this, as they are square, and even though you can paint less than a ... | |
| Putting pictures into java | 3/5/2009 |
| Q: when i put two pictures in java they have white backgrounds even when i take the background out in ... A: It might be possible that the format you are saving the image in doesn't support transparency, or ... | |
| incomparable types Error! | 3/2/2009 |
| Q: I could really use your help :) if you look at the code here: http://rafb.net/p/jkrJXP28.html At ... A: You can't intermix Strings and chars. You probably just need to change your Stack from having chars ... | |
| incomparable types Error! | 3/2/2009 |
| Q: I could really use your help :) if you look at the code here: http://rafb.net/p/jkrJXP28.html At ... A: You can only use constant values in case statements. You either have to change your switch statement ... | |
| if condition problem | 2/27/2009 |
| Q: I have a problem with my code: this code will serve as one of our assignment in our school Pls ... A: You mean there is no compile time error... You shouldn't use == with Strings or any non-primitive ... | |
| Regarding writing to CSV using Java.io.FileWriter | 2/26/2009 |
| Q: I can successfullu write to a CSV File using Java.io.FileWriter using some code that you had posted ... A: You can use the DecimalFormat class ... | |
| Splash Screen in Swing | 2/26/2009 |
| Q: Harper, Thanx for giving answer of my privious question. Now,I want to ask u about to ... A: When you run the java command you can specify a splash screen (can also be included as an option in ... | |
| Button Click sound | 2/25/2009 |
| Q: Harper, I've been working on a swing based project. In which i need ur help. I want to put ... A: The java sound API is quite advanced and allows for many complex operations. Assuming you want to ... | |
| Java | 2/22/2009 |
| Q: I tried to use Trend Houscall to scan my machine, however, it said Java was not installed or ... A: You probably need to open the Java control panel and ensure that Java is properly associated with ... | |
| report in java | 2/18/2009 |
| Q: I want create software like Notepad Or text Editor in java how can i do it it will be nice if you ... A: If you are displaying the information to the user in a JTable then you can simply call print() on ... | |
| bachelor of computer science | 2/17/2009 |
| Q: Artemus I'm halfway towards my bachelor of computer science degree. I just got a question for you ... A: A general degree leads to a more rounded career which will make it easier to switch professions. A ... | |
| Fill web form - JAVA | 2/14/2009 |
| Q: i m Sherzod Hakimov. studying Computer science . i saw ur post in the site filling web form with ... A: captchas are designed to thwart automatic registration exactly like you are trying. There are ... | |
| Stack | 2/13/2009 |
| Q: I'm new to Java. I was wondering if you know some good links or examples on stacks? something like ... A: As I said you can look at the source code of these for inspiration. I also explained how to ... | |
| Stack | 2/13/2009 |
| Q: I'm new to Java. I was wondering if you know some good links or examples on stacks? something like ... A: The LinkedList class is a good class that can simulate a stack. The push operation is addLast, and ... | |
| Developing SWT Games | 2/10/2009 |
| Q: I need help in developing SWT games in java, but I really didin't find a reference for developing ... A: This depends on what kind of game you are developing. Many games use their own custom interface and ... | |
| detect firewall in the client system while running the web page | 2/10/2009 |
| Q: When i am opening the web page, find firewall in the client system whether firewall installed or ... A: Nearly every computer now days has a firewall installed. That firewall may or may not interrupt with ... | |
| Notpad | 2/7/2009 |
| Q: I want create software like Notepad Or text Editor in java how can i do it it will be nice if you ... A: I'm not sure what process you took to create the exe, but simply telling me it isn't working gives ... | |
| Java - spliting numbers | 2/5/2009 |
| Q: I wannna know how to split numbers using java. For example 234 is split into 200,30,4...can you ... A: You can use the mod operator (%) for this. int n = 234; //input value int d = 10; //start at the 1s ... | |
| Java | 2/3/2009 |
| Q: I have created a download manager in java. Now i want to integrate it with web browser.How can i do ... A: You first have to decide if you want to use applets or java web start. Java web start runs in a ... | |
| Array of Objects | 2/2/2009 |
| Q: what would I put in each constructor? MyArray () MyArray (int initCapacity) MyArray (Object[] a) ... A: You need two data members, an array, and a count that determines how much of the array is in use. ... | |
| Array of Objects | 2/2/2009 |
| Q: what would I put in each constructor? MyArray () MyArray (int initCapacity) MyArray (Object[] a) ... A: What you are trying to do is emulate a class that already exists in Java, java.util.ArrayList. ... | |
| Java | 1/28/2009 |
| Q: I have a very general question for you. I have a background in design and am pretty adept at ... A: Although I haven't used Flash I cannot tell you what shortcomings Flash has. But with Java, its ... | |
| java swing | 1/25/2009 |
| Q: The image is in the panel.how to save that image in the file using savedialogbox A: Step 1: Get the location to save from the save dialog box E.g. JFileChooser fileChooser = new ... | |
| Java | 1/17/2009 |
| Q: How to accept input using stream readers in java? A: Something like this: import java.io.*; ... try { InputStream in = new ... | |
| is it possible | 1/13/2009 |
| Q: hai I am running a java application and want to give the focus to a Microsoft word application ... A: This is difficult since java has very few operations that interact directly with other running ... | |
| Java and JavaScript | 1/9/2009 |
| Q: I am learning about Java and JavaScript and kinda understand a little about them. I am just not ... A: Java is a compiled language like C or C++. It is 'safe' in that it manages computer resources and ... | |
| interpreter & compiler | 1/7/2009 |
| Q: i think this is a very basic question.... JVM is an interpreter. Interpreter shows error step by ... A: I think you are confusing javascript with java. Javascript uses an interpreter to run, while java ... | |
| interpreter & compiler | 1/6/2009 |
| Q: i think this is a very basic question.... JVM is an interpreter. Interpreter shows error step by ... A: The JVM doesn't always run in interpreted mode, it can also run in compiled mode, or mixed. By ... | |
| Graphical simulation, Threads, CPU usage | 1/1/2009 |
| Q: Java Problem: Basically my ball collision simulator hogs CPU usage. Description: My class extends ... A: Don't rely on paint if you want to do continuous updates. Instead start a new thread, put its ... | |
| core java-package | 12/25/2008 |
| Q: package mypack; class Balance { String name; double bal; Balance(String n,double b) { name=n; ... A: You should create a directory and put the source code in there. Then compile from the base ... | |
| Design patterns | 12/24/2008 |
| Q: I hope you are fine and in good health, please, I need your help in design patterns, I searched ... A: There are many design patterns for various purposes. If you were more precise on what you were ... | |
| Applet in Opera | 12/23/2008 |
| Q: I developed a Java Applet using Swing. It runs correctly in IE & Firefox. But When it runs in Opera, ... A: If tooltips are not working for you, you have a few options: 1. You can use Java web start instead ... | |
| Ask about java | 12/21/2008 |
| Q: Java is Application Programs or not? A: Java can be used to design applications that run directly on an end user's computer. Java programs ... | |
| Creating GUI using different classes | 12/14/2008 |
| Q: In my java application, I intend to create my GUI, actually an output frame, step by step by adding ... A: This depends on how reusable you want your components to be. Simply passing your main class as a ... | |
| Notpad | 12/14/2008 |
| Q: I want create software like Notepad Or text Editor in java how can i do it it will be nice if you ... A: Here is an example of a simple text editor. There are various text components, JTextArea is easy to ... | |
| Dragging Vector-made pictures around the Panel | 12/10/2008 |
| Q: Im a member of a small team that struggles to write a simulator of a train modell. So far we have 4 ... A: Although I don't have all your code (missing Punkt and Formeln classes), what you probably want to ... | |
| Math.random() | 12/8/2008 |
| Q: I need to dispay a frame that contains 9 lebles which may dispay a cross image icon, a not image ... A: A simple way to generate a random number between 0 and 2 is: int n = (int) (Math.random() * 3); ... | |
| doubly linked list from C++ to Java | 11/27/2008 |
| Q: I have done 1 and a half year in CS and then quit and started working. I'm now continuing where I ... A: When you install the java SDK, you will find src.zip folder in the install directory. For Windows ... | |
| Java Random Array Numbers Ascending | 11/23/2008 |
| Q: You responded saying that you dont answer Homework questions. I am sorry I was not asking for the ... A: If you can't use the sort method, then you could iterate though the array finding the smallest ... | |
| doubly linked list from C++ to Java | 11/23/2008 |
| Q: I have done 1 and a half year in CS and then quit and started working. I'm now continuing where I ... A: Java already has a linked list class: java.util.LinkedList, you can look at the source code for that ... | |
| Array out of Bounds | 11/21/2008 |
| Q: I was wondering if you could help me, I always get an ArrayINdexOutofBounds:0 error and i don't know ... A: If you get an array index out of bounds 0, it means you have an array of size 0, as you can only ... | |
| Low level rendering | 11/21/2008 |
| Q: i wanted to know how rendering works, and if it's not too difficult, i want to build a very ... A: If you are using Java, you have to use Java classes since many of them access the underlining ... | |
| Database update using a timer | 11/17/2008 |
| Q: I need help for the following subject. I have to make an application that saves information in SQL ... A: Look at the Timer tutorial: http://java.sun.com/docs/books/tutorial/uiswing/misc/timer.html In ... | |
| Downloading Notepad file from Internet | 11/15/2008 |
| Q: How can I download a notepad file from internet by using Java code? Can you give me the java code ... A: Here is a simple tutorial on using URLs: ... | |
| java Snake Game | 11/14/2008 |
| Q: I've recently been asked to create a java program that is very similar to the classic mobile phone ... A: Java has limited functions for using the console, it is not recommended you try to emulate a ... | |
| Thread execution order | 11/13/2008 |
| Q: I have a doubt in Threads section. How run() execute when start() invokes ,When we use Runnable ... A: The details on how start() works is platform dependent. In many cases, start() will return and the ... | |
| new operator | 11/11/2008 |
| Q: I am having a hard time understanding why I need to use the new operator in the following code: ... A: You can't. This is not c++, all objects are allocated on the heap. In actually, the compiler would ... | |
| new operator | 11/11/2008 |
| Q: I am having a hard time understanding why I need to use the new operator in the following code: ... A: The Scanner class is a wrapper around a stream (in this case System.in) that provides additional ... | |
| random() | 11/9/2008 |
| Q: how can you get one character at random from a string.is that possible or just random method work ... A: To get a random character from a String, you simply need to pick a random integer up to the length ... | |
| random method | 11/6/2008 |
| Q: how can you generate 6 numbers on range 1 to 49. by using Random nun = new Random() and using ... A: The nextInt(n) method in Random will return an int at least 0, and less than n. E.g. nun.nextInt(10) ... | |
| How run() execute when start() invokes ,When we use Runnable interface ? | 11/6/2008 |
| Q: I have a doubt in Threads section. How run() execute when start() invokes ,When we use Runnable ... A: The easiest way to do this is to subclass Thread and override the run() method. After that, create ... | |
| multithreading | 11/5/2008 |
| Q: does the instances of same thread have different copies of variables and methods? A: Each thread has its own copy of local variables. Each thread may keep its own copy of fields, and ... | |
| Java code Hyperlink | 11/4/2008 |
| Q: I am dessperatly trying to find out how to make a button go to a website in java. It for a chool ... A: If you make a JButton do this, it will only work on Operating Systems that use Windows. There are a ... | |
| array | 11/3/2008 |
| Q: "/*INPUT TWO STRING ARRAYS AND SORT THEM i need to accept two arrays as parameters and sort them ... A: The reason that line does not work is that your sort method returns a String, but you are assigning ... | |
| How to read finger prints in java | 11/3/2008 |
| Q: I want to read finger printing form Nitgen FP devices in my web application A: This depends on what API there is available to use the device. Chances are the API has a c++ ... | |
| I want to be a good programmer | 10/28/2008 |
| Q: I will like to be a good programmer as i have just finished from the University here in Nigeria as a ... A: You can look at sun's tutorial: http://java.sun.com/docs/books/tutorial/ That will help you get ... | |
| Decryption problem | 10/27/2008 |
| Q: I have a problem with a project, I am building a file encryption and decryption application in ... A: The variable you are talking is never used. You decrypted the data, but you are not doing anything ... | |
| Simulating multiple mice within a drawing application? | 10/27/2008 |
| Q: Scenario: 1 - System Mouse 1..9 - Simulated Mice Simulated mice input will be provided by our ... A: The current system will work fine. Generate synthetic mouse events from the extra devices. This ... | |
| Zip to Exe | 10/23/2008 |
| Q: I'm trying to write a program in java that will convert a zip file into a self extracting exe, with ... A: The primary problem is creating an exe with java. You can look at various free libraries that ... | |
| Prime numbers | 10/14/2008 |
| Q: My daughter is 13 and needs to know "Why are Prime Numbers important" Many Thanks A: they don't seem to have any pattern, but they are easily understood. Today, prime numbers are used ... | |
| Core Java | 10/14/2008 |
| Q: How to compare elements of type Long within two HashMaps and Delete the unique elements, in ... A: There are various ways of doing this. One way is to dump all the elements from the first list into ... | |
| Core Java | 10/13/2008 |
| Q: How to compare elements of type Long within two HashMaps and Delete the unique elements, in ... A: A HashMap is a mapping between two elements. If the Long is a key in the map you can use keySet() ... | |
| Basic If/else statements | 10/10/2008 |
| Q: The question I'm asked is: Write a program that asks the user to enter a month (1=January, ... A: The problem is that getDays method should return the number of days, not print them out. Your main ... | |
| calculate sum in jtable | 10/9/2008 |
| Q: i want to ask.Can you teach me how to calculate sum in jtable?For example i got rows of qty,price ... A: You would do something like this: What you actually do once you get the value that was changed ... | |
| FirePropertyChange | 10/6/2008 |
| Q: .. i would like to ask 1. what is the importance of firePropertyChange and the ... A: 1. firePropertyChange allows listeners to be notified when a property change occurs so that they may ... | |
| binary system | 10/4/2008 |
| Q: why binary system is used in data representation in computer? A: Binary is used in digital computers because under the hood computers are simply a large number of ... | |
| loading images in java | 10/3/2008 |
| Q: Artemus Probably the subject says it all. How can I load a .JPEG image in java?? Just the simplest ... A: The easiest way depends on what you want to do with it. If you just want to display it on the screen ... | |
| enlarge java heapMemory | 10/3/2008 |
| Q: and i tried to enlarge the heap by Java -Xmx but it wasn't useful is there other solution to enlarge ... A: Java will only allow you to allocate as much memory as you have ram. An int is 4 bytes, so ... | |
| regarding threads in java in client-server program based on udp potocal | 9/30/2008 |
| Q: server program:import java.io.*; import java.net.*; import java.lang.*; class UServer extends ... A: This depends on what you mean by access. When you create your thread class you can pass any data ... | |
| java event handling | 9/15/2008 |
| Q: I am using netbeans ide.how to focus next text field by pressing enter key in swing programming? A: See the focus subsystem tutorial: http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html ... | |
| jdbc | 9/5/2008 |
| Q: Artemus i would like to insert into my database a date in the format DD-MON-YYYY so far, i have ... A: You can use the SimpleDateFormat class (java.text.SimpleDateFormat ) E.g. SimpleDateFormat format = ... | |
| creating an object from Class variable | 9/4/2008 |
| Q: artemus I have the following code inside my main method /* code begins here Class personclass = ... A: You can use (if you are linking with the person class): Person person = (Person) ... | |
| set CLASSPATH | 8/25/2008 |
| Q: artemus i'm learning about packages in java i dont get the purpose of set CLASSPATH what is its ... A: You put your classpath at the base of your working directory, where your package is located. javac ... | |
| set CLASSPATH | 8/25/2008 |
| Q: artemus i'm learning about packages in java i dont get the purpose of set CLASSPATH what is its ... A: The classpath is a list of locations to find java libraries. When you compile with javac you can ... | |
| Opening ,AVI Files From Java | 8/24/2008 |
| Q: Hei, I am wondering is there any command or algorithm to open .AVI or any other not txt file Type ... A: You can have Java launch external programs to handle these types of files. To do this on windows ... | |
| Video recording | 8/20/2008 |
| Q: I am from kerala,india. I really like java. Now i want help from you to record video from USB port ... A: You will have to get the Java Media framework library. Once you have it, you can use ... | |
| JAVA File Save | 8/17/2008 |
| Q: Thanx for last answer. Now My Problem is "I want to let users to save the some txt content from a ... A: You can use the getSelectedFile from the file chooser to get the file the user choose. From there ... | |
| JAVA Image | 8/14/2008 |
| Q: I m Nirav from India doing MCA. I m working on a project in Netbeans 6.0. I want to hide one ... A: You could hide an image in a jpg by adding it as meta data. In order to do this the hidden image ... | |
| java | 8/13/2008 |
| Q: I am shukle parnash from Gujarat in India. I am student of MCA(Master In Computer Application) I am ... A: This depends on what you mean by join. Do you mean append one audio file after another? or Have ... | |
| JAVA FILE OPEN | 8/5/2008 |
| Q: Thanx for previous answers. Now I use JFilechooser to open a file from Hard Disk. Here I want to let ... A: import javax.swing.*; import javax.swing.filechooser.*; import java.io.*; ... JFileChooser ... | |
| java warning messages | 8/2/2008 |
| Q: Artemus I use the LinkedList class from java.util.* package in order to create a list of objects ... A: LinkedList is a generic class and should be typed for the kind of elements you will have in the ... | |
| JAVA Problems | 7/31/2008 |
| Q: how can i open a file from file chooser and edit and save it..? ANSWER: Getting the file from the ... A: In notepad, or in a notepad like interface? To do this in notepad you would (and this only works in ... | |
| file IO in java | 7/30/2008 |
| Q: Artemus what is the most common way of reading a file (.txt file) and writing to a file in java?? ... A: You can see the tutorial on reading text files in Java at: ... | |
| JAVA Problems | 7/27/2008 |
| Q: how can i open a file from file chooser and edit and save it..? A: Getting the file from the file chooser is as simple as: JFileChooser chooser = new JFileChooser(); ... | |
| exit in java | 7/25/2008 |
| Q: Artemus I've written a try catch block of code if the catch executes, I want the program to ... A: You can use: System.exit(0) to terminate the program at any time (assuming you are running an ... | |
| java -> SOAP -> COM | 7/24/2008 |
| Q: I'm trying to gauge what's involved in calling a COM object from java via SOAP. I can probably ... A: I'm not sure if there is any good way to do what you want. What I would do is write a COM wrapper ... | |
| Please!Please! help me to write this program | 7/18/2008 |
| Q: write a program to input the values of three coefficients of a quadratic equation ... A: Just use the Quadratic equation (http://en.wikipedia.org/wiki/Quadratic_equation) Have a test in ... | |
| Custom Java cursor on Linux | 7/15/2008 |
| Q: I'm creating a custom cursor using png 16x16 images. The images are rendered perfect as a cursor on ... A: Thats hard to say as I don't have Linux and it might be an issue with your distro or the version of ... | |
| PDF to jar | 7/14/2008 |
| Q: is there a way that i can convert PDF files to Jar? so that i can share my ebooks with my friends ... A: You would need to include a PDF reader in the jar then. If you can find one with an open API then ... | |
| java problem (urgent) | 7/14/2008 |
| Q: i want to update my database using JTable in swings and jdbc to it... iam using prepared statement ... A: You could use the default table model, but it is probably more complex as you would have to add ... | |
| passing enums as parameters in Java | 7/13/2008 |
| Q: My question is about enum types. Is it possible to pass them as parameters in methods and ... A: In order to import anything it cannot be in the default package. packages are like namespaces, and ... | |
| passing enums as parameters in Java | 7/12/2008 |
| Q: My question is about enum types. Is it possible to pass them as parameters in methods and ... A: Enums are classes but with a set of predefined values. As such you must both declare the enum and ... | |
| javaw | 7/11/2008 |
| Q: One of my application use Javaw , server OS is windows 2003. I am facing a strange problem from last ... A: javaw is the executable that many java programs use when they do not have a command prompt. If you ... | |
| information | 7/9/2008 |
| Q: i m nilesh megha, i m doing mca in india, i have to develop websearch engine in core java so please ... A: You can start by indexing pages. See: ... | |
| java problem (urgent) | 7/9/2008 |
| Q: i want to update my database using JTable in swings and jdbc to it... iam using prepared statement ... A: The query you have is fine, but does not work with your current database. This generally happens ... | |
| THIS IS SO IMPORTANT | 7/8/2008 |
| Q: I was wondering would you please tell me: is it important to update the java for the internet? ... A: Newer versions of Java may be more secure, faster, and support applets that use the newer ... | |
| updating JTable(URGENT) | 7/7/2008 |
| Q: i want to edit the cells in JTable which takes its data from a MS-Access database and those edits ... A: For your first question, I can't really help with that since I don't have your database (or even ... | |
| Random Ovals | 7/6/2008 |
| Q: What I am trying to do is draw ovals to "erase" the graphic. The ovals should appear randomly when ... A: You are getting a blob since you are painting 20 ovals, all of which are really close to each other ... | |
| updating JTable(URGENT) | 7/5/2008 |
| Q: i want to edit the cells in JTable which takes its data from a MS-Access database and those edits ... A: Not having too much skill with databases, I've made up a simple example of what you want... you can ... | |
| updating JTable(URGENT) | 7/2/2008 |
| Q: i want to edit the cells in JTable which takes its data from a MS-Access database and those edits ... A: In your Connection object (assuming you are using the java.sql package) you would first turn off ... | |
| If Else statements and ; expected | 7/1/2008 |
| Q: I am using If Else statements in a form of repeating Else If statements. If (calculated = 10); { ... A: The compiler is very confused on what you are trying to do since this has many problems. The ... | |
| JNI | 6/26/2008 |
| Q: Sir , I want to Access Windows Core (Kernel) DLL's in java program please help with a complete ... A: You have a couple of options... Java only supports calling native code if the name of the function ... | |
| unicode | 6/22/2008 |
| Q: i would like to display an Arabic (Unicode) String of characters (enter by user in Jtextarea) from ... A: In the pre init code of the component you can set the orientation to left to right overriding the ... | |
| passing arguments between frames | 6/21/2008 |
| Q: I am trying to write a code in java to do the following: i got an interface for the user, it ... A: When they hit submit you can either hide or dispose of the frame (depending if you plan to use it ... | |
| java problem | 6/21/2008 |
| Q: i am trying to do internet transaction but when it loads the login page of the bank website i get ... A: There is a problem with the applet loading. You can open the Java console (under the tools menu) and ... | |
| Tomcat error | 6/16/2008 |
| Q: I am facing this error and as i am quite new to java i am not sure what error is this. if ... A: Although I don't have experience with servlets, the error indicates that you are missing a library ... | |
| printing a panel | 6/14/2008 |
| Q: I am currently writing a piece of software, a sort of database type thing. I have a form which ... A: I tried your PrintUtilties class with some sample code below: import javax.swing.*; import ... | |
| 64bit Windows2003 filtering the entries of regedit when invoking by Runtime.exec() | 6/11/2008 |
| Q: I am creating a process and with that process am invoking a batch file. Content of Java program: ... A: The output of the batch file (and by extension regedit) is not automatically redirected to standard ... | |
| progress bar | 6/5/2008 |
| Q: i am working on a project called web spider where i am displaying all the hyperlinks of a web ... A: When you have a URL, you can use getConnection to get a URLConnection. From there you can call ... | |
| gui | 6/5/2008 |
| Q: my project has an interface, so whenever i execute my program i get that interface itself...but i ... A: The difficulty of this depends on how you are doing loading. In order to show a progress bar there ... | |
| Applet notinited | 6/4/2008 |
| Q: I need help over here I made one simulation applet using the NetBeans IDE. When I run my simulation ... A: Some exception was probably thrown in the init, possibly a security issue or a missing resource. In ... | |
| difference between jdbc and ADO | 6/2/2008 |
| Q: what is the difference between jdbc and ADO(Active Data Object) . Please explain me in detail. A: jdbc is generally what java programmers use to access a database, while ado is generally what ... | |
| Images | 6/2/2008 |
| Q: I am trying to add an image to a swing panel, with the following code... String location = (String) ... A: If you don't give the proper path of an image no error is thrown, you will simply not get an image. ... | |
| Java | 5/31/2008 |
| Q: I am writing a program in NetBeans. I need to use the "or" operand and I can't figure out how to ... A: If you are using a standard American keyboard, you would press SHIFT=\ which should be |. On many ... | |
| draw arc | 5/30/2008 |
| Q: . i have problem to draw a arc in java.. i want draw a arch from pixel to pixel but not use method ... A: If you have the coordinates in this format, you can use Path2D.Float (or GeneralPath if you aren't ... | |
| string variable, user input | 5/26/2008 |
| Q: I'm supposed to ask the user for the manufacturer, model, etc... of an aircraft. The answers to the ... A: Yes, you can do the same for a model. Then you want to create a class that can keep all of these ... | |
| saving in a folder | 5/25/2008 |
| Q: I am working on a project web spider. i am storing the web pages selected by user so that user can ... A: Unless your program is running, there is no way to delete a file after a set period of time. When ... | |
| .bat file | 5/25/2008 |
| Q: i want to create a .bat file for my project so that i can double click on it and execute it. i tried ... A: You might have the classpath configured incorrectly, or the batch file is not opening in the correct ... | |
| Wont print credit card number | 5/25/2008 |
| Q: I am having problems printing the content of my objects that are in my arrayList. What I have now ... A: You mispelled creditcard in your constructor's paramters, as a result when you assign the value, you ... | |
| string variable, user input | 5/24/2008 |
| Q: I'm supposed to ask the user for the manufacturer, model, etc... of an aircraft. The answers to the ... A: When you save something numerically, it is converted from a string to some other kind of data. ... | |
| Printing objects from an arrayList | 5/22/2008 |
| Q: I am having problems printing the content of my objects that are in my arrayList. What I have now ... A: If its just printing the customer's address, then you will need to fix the toString() method in the ... | |
| .bat file | 5/21/2008 |
| Q: i want to create a .bat file for my project so that i can double click on it and execute it. i tried ... A: The java command does not take the name of the source program as you have suggested, but rather the ... | |
| JAVA | 5/20/2008 |
| Q: I am shukle parnash from Gujarat in India. I am student of MCA(Master In Computer Application) I am ... A: I am still not sure what you are trying to accomplish here. The FileLock API is not designed to ... | |
| hello | 5/20/2008 |
| Q: can you please explain me recursion. also please give me hint to make a program to convert the ... A: You can find information about recursion on wikipedia: ... | |
| Sending a download request through local internet proxy | 5/18/2008 |
| Q: My project is about downloading files from internet by specifying direct url. E.g. ... A: You can define a subclass of ProxySelector and implement the select method that gives a proxy based ... | |
| Extract Text With XML | 5/17/2008 |
| Q: Harper My question is: I have a .txt file and I would extract some words from this file. To ... A: If you like using xpath, the class exists in the javax.xml.xpath package. Or if you perfer to ... | |
| saving in a folder | 5/17/2008 |
| Q: I am working on a project web spider. i am storing the web pages selected by user so that user can ... A: Simply create a File object that points to the file you want to delete and call delete(). If this is ... | |
| saving in a folder | 5/16/2008 |
| Q: I am working on a project web spider. i am storing the web pages selected by user so that user can ... A: Instead of using new FileOutputStream(localFileName)); use: new ... | |
| Java | 5/16/2008 |
| Q: Sir, I want to create a circular progressbar in my Project.Please provide me the source code for ... A: There are various exe wrappers available, you can search for them based on your needs. Note that ... | |
| Encryption/Decrypt;ion in C via JNI | 5/15/2008 |
| Q: I am using openssl des algorithm for encryption and decryption.I have a java program which will send ... A: Hard to say what is happening. I would suggest that you run java with -Xcheck:jni to enable jni ... | |
| java gui | 5/14/2008 |
| Q: I have a question about how java GUIs and all GUIs are able to layout objects. I just got into GUIs ... A: The idea is to swap each card with another card later in the deck (including itself), effectively ... | |
| Java Frame | 5/14/2008 |
| Q: Sir, Thanks a lot for providing me the answer of my previous question.Now I can easly access the ... A: It sounds like you are adding components after you display the frame. Make sure that you don't set ... | |
| Java | 5/14/2008 |
| Q: I am trying to open a PDF file with the dialog box open/save/cancel. The code which i have written ... A: Stating that you have an attachment is not enough you actually have to upload it. E.g. ... | |
| GUI | 5/12/2008 |
| Q: I have developed a DAC(download accelerator) ! now , i want a borderless frame containing only an ... A: If you just want an image you can start java with -splash:<imagepath> to show that image. You can ... | |
| JAVA | 5/11/2008 |
| Q: First of all thank you very much sir that you are solving my queries thank you very much I am ... A: The lock is reentrant. Just like other locks, locking on the same thread more than once won't block. ... | |
| Execute Java File | 5/6/2008 |
| Q: Harper When I execute a Java file into Netbeans IDE, it shows the following message compile: ... A: It looks like you are running a program as part of the build step. So, in order to run it correctly ... | |
| Java program to check drive capacity ! | 4/27/2008 |
| Q: I am working on a "Download Accelerator" project. "I have to somehow figure out a way to check my ... A: If you are using Java 1.6 you can use: getUsableSpace() and getTotalSpace() which are both methods ... | |
| accessing file in subfolder | 4/25/2008 |
| Q: well I know the name of the file while I'm in the main method, but it exists in a sub folder of ... A: You can either put a / or a \ between the name of the directory and the file name. E.g. File file = ... | |
| TimeZone related problem | 4/24/2008 |
| Q: Hope you are doing good. I have a very basic java question related to Timezone apis. When we call ... A: You could probably get a good matchup by using a combination of getting the system property ... | |
| splitting an image | 4/23/2008 |
| Q: am marla from brunei. Basically, am a student in computing and currently am doing jigsaw puzzle ... A: If you have the image as a BufferedImage you can call getSubimage(int x,int y, int width, int ... | |
| Reflection api | 4/22/2008 |
| Q: Easy way to find what classes are is specified package (in runtime) A: Simple answer: You can't. The class loader works as a discovery process and classes are not located ... | |
| java swings | 4/12/2008 |
| Q: how to pass values from one frame to another.consider that a student provides his reg.no in form1 ... A: how to pass values from one frame to another.consider that a student provides his reg.no in form1 ... | |
| Deriving a list of Prime numbers | 4/9/2008 |
| Q: i already created my list of prime numbers which is the one bellow public class PrimeNumber { // ... A: > I'm a bit confused about creating a list of empty prime numbers in an ArrayList. You can create ... | |
| Dice Simulation | 4/5/2008 |
| Q: My programming teacher gave me thisWrite a program that will simulate the result of throwing of a ... A: Math.random() will return a double between 0 and 1 (not including 1). So if you want a value between ... | |
| java and java script | 3/30/2008 |
| Q: what is java and java script? A: Short answer: Java is a programming language similar to C that allows the developement of advanced ... | |
| urgent need " display data in JTable" | 3/29/2008 |
| Q: and I work on project which is to display many data "Vector "from diferent source in one Jtable ... A: I can understand you are having some trouble with JTable, but unless you can state your exact ... | |
| get the output of a background process | 3/28/2008 |
| Q: I'm trying to use the output of a background process but I just have problem , the file result.txt ... A: The > operator doesn't work with the exec method, you can only use that to actually execute ... | |
| Chat RMI using Java | 3/27/2008 |
| Q: hye, i am doing the java RMI chat program and been asking NZ all this while, but somehow she on ... A: For some reason there was a security policy installed that prevented you from attempting to make ... | |
| java | 3/26/2008 |
| Q: Hai. Am new to java. I need a java program to search and download video files from local system. Can ... A: You can use the File API to find out about files on your local system and determine what the ... | |
| image processing in java | 3/24/2008 |
| Q: can i read images of 600 Mega byte and display them in a window using java.can i also perform some ... A: If you simply want to display an image you can use the ImageIcon class. Here is a simple piece of ... | |
| java.io.BufferedReader | 3/24/2008 |
| Q: How do BufferedReader and FileInputStream help in downloading files(txt,audio,video) from internet ? ... A: If you look at the example code I provided earlier, you will see that you can use it to download any ... | |
| about javax package | 3/24/2008 |
| Q: actually I,m a student. I,m doing some basic programs in java but I,m facing the problems reguarding ... A: There is no javax package, there is however javax.swing which is part of the JDK. If you are missing ... | |
| image processing in java | 3/23/2008 |
| Q: can i read images of 600 Mega byte and display them in a window using java.can i also perform some ... A: Sure you can, provided you have enough ram on your computer. If you are planning to do use heavy ... | |
| Socket Programming: Threading to Listen on Multiple Ports | 3/22/2008 |
| Q: I am in the process of writing a server side application that would allow listening on multiple ... A: The problem is that you have multiple threads going at each port so you could get multiple ... | |
| java.io.BufferedReader | 3/21/2008 |
| Q: How do BufferedReader and FileInputStream help in downloading files(txt,audio,video) from internet ? ... A: If you just want to display an image on the net you can use: Image im = ... | |
| java.io.BufferedReader | 3/20/2008 |
| Q: How do BufferedReader and FileInputStream help in downloading files(txt,audio,video) from internet ? ... A: FileInputStream will not help in downloads (since its only for local files). The BufferedReader is ... | |
| Socket Programming: Threading to Listen on Multiple Ports | 3/18/2008 |
| Q: I am in the process of writing a server side application that would allow listening on multiple ... A: The simplest way of doing this would be to change: String port1024 = ss1.portListen(1024); ... | |
| Java WebCrawler | 3/17/2008 |
| Q: I have downloaded the code for the webcrawler from the Java website. I have it running except for ... A: guessContentTypeFromStream is a best guess about the content type and should only be used if ... | |
| Manipulating BMP in JAVA | 3/17/2008 |
| Q: I am doing a project on Fingerprint recognition..for that i need 2 retreive pixel values from a ... A: Assuming you have the image in a BufferedImage (ImageIO class gives various ways to load an image ... | |
| Hello | 3/16/2008 |
| Q: how r u? i hope u r fine, i want to ask how to draw a chess board in the console not GUI and please ... A: You could draw a chess board like this: ---------------- |R|N|B|K|Q|B|N|R| |P|P|P|P|P|P|P|P| | | | | ... | |
| simple dictionary | 3/14/2008 |
| Q: could you please help me to make a code to program simple dictionary? please, because I still ... A: The HashMap class is a dictionary. You could build an implementation on top of that, to make your ... | |
| java code | 3/14/2008 |
| Q: hai friend, we need java coding to http traffic generation. The program generate series of request ... A: You can use the URL class to create requests to the server. Once the URL is created you can use ... | |
| Java exceptions... | 3/13/2008 |
| Q: Exception in thread "main" java.lang.NullPointerException at ... A: You commented out the initialization of the button: //b2 = new Button("Update"); Thus, b2 remains ... | |
| JAVA | 3/8/2008 |
| Q: I am shukle parnash from Gujarat in India. I am student of MCA(Master In Computer Application) I am ... A: For any kind of mobile development you will want to use J2ME. I haven't used J2ME, so I would not ... | |
| Lotus Notes session | 3/5/2008 |
| Q: Im writing app that connect to Lotus Notes database and retrieves some data.This database is ... A: You cannot directly connect JNI in .NET to Java code, since JNI methods must be exactly formed in a ... | |
| use of finalize() destructor | 3/5/2008 |
| Q: I read an answer on how to create a destructor in Java where you said: "To add a destructor use: ... A: You don't call finalize; it is called for you automatically when the object is garbage collected. ... | |
| Reading char from file | 3/4/2008 |
| Q: I am trying to read the char with the max frequency in a file but this code seams it doesnt ... A: Well this will only give the highest occurrence of a character that appeared with a line, not the ... | |
| Creating multiple jvm in a single systems | 3/4/2008 |
| Q: Can any one give me a simple example for creating and running multiple jvm in a single machine. ... A: So, the bigger problem is seems to be: how do I attach a java program to an already running jvm. ... | |
| Problem changing the color for items on a JComboBox | 3/2/2008 |
| Q: I'm trying to make a JComboBox with different colors for each item in the List both when the popup ... A: The problem is that the JComboBox UI sets the foreground according to the OS stand foreground ... | |
| Cannot select JTable Row | 3/2/2008 |
| Q: I fill jtable with data from db.now the problem is i cannot select rows in the jtable.what is the ... A: Assuming that the data is filled in correctly there is no reason that it coming from a database ... | |
| Problem changing the color for items on a JComboBox | 2/29/2008 |
| Q: I'm trying to make a JComboBox with different colors for each item in the List both when the popup ... A: Instead of returning your own JLabel, you are probably better off extending the ... | |
| JComboBox Selection | 2/28/2008 |
| Q: I have added items like(Apple,Orange,Grapes,Banana) in JComboBox and displayed it.It works fine. But ... A: This is how combo boxes normally work. What happens if someone selects something in the middle? Then ... | |
| permutations | 2/28/2008 |
| Q: I am not sure how to best do permutations. I have 5 functions (a - e). Every function does something ... A: Well, it is hard to avoid for loops, but you can limit it to 2. What you do is keep an integer that ... | |
| adding binary | 2/28/2008 |
| Q: i want to add 2 binary numbers together mostly using string manipulation. i do NOT want to convert ... A: Well, the problem is that if you read them from left to right, you will need to see the next one, ... | |
| append data | 2/26/2008 |
| Q: I want to append data to an already existing file.I dont want to lose any data. I did it using ... A: When you create the outputStream for the file (or filewriter) add a true as an extra parameter to ... | |
| Need to generate unique transaction IDs | 2/25/2008 |
| Q: In my project I need to generate unique transaction Ids for each request.It has to be 6 digit ... A: The ID you would use depends on what format you want. If you don't really need random ones, you can ... | |
| JAVA | 2/19/2008 |
| Q: I am shukle parnash from Gujarat in India. I am student of MCA(Master In Computer Application) I am ... A: You would only use J2ME if you plan on having the program run on mobile devices. Netbeans is just an ... | |
| JTable | 2/19/2008 |
| Q: what is a model in jtable.where other swing components doesn't need to follow any model.and how can ... A: Most swing components use a model, you often use the default one, since it is good enough for what ... | |
| about checked exception in anonymous classes | 2/18/2008 |
| Q: Please have a look on the following statment... "Initializer expressions in named classes and ... A: import java.io.*; public class Test { public void foo() throws FileNotFoundException { ... | |
| edge detection, RGB, barcode | 2/15/2008 |
| Q: Can you or anyone please help me how to use or code of edge detection and also how to adjust the RGB ... A: If you are reading the barcode not at an angle (or not a large angle). You could start half way ... | |
| edge detection, RGB, barcode | 2/14/2008 |
| Q: Can you or anyone please help me how to use or code of edge detection and also how to adjust the RGB ... A: If you have a BufferedImage of the barcode you can use the getRGB and setRGB methods to filter out ... | |
| submit a button using swings | 2/13/2008 |
| Q: How can i submit my form in a database using submit button? By using java Swings A: Well... you would create an SQL query based on the input from the form data, open a connection to ... | |
| How to read from MS Excell 2007(xlsx) | 2/12/2008 |
| Q: actually problem is that. HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) ... A: You can hook up your java code to C code. Read up on the JNI, or just have a MS application running ... | |
| JAVA | 2/9/2008 |
| Q: I am shukle parnash from Gujarat in India. I am student of MCA(Master In Computer Application) I am ... A: You can use a FileInputStream to read bytes from a file. You can use a InputStreamReader to convert ... | |
| search code in servlet for search keyword in given file | 2/7/2008 |
| Q: i wanna java code for searching particular keyword in given file of given folder. hints-suppose we ... A: You can use the File.listFiles() method to get a list of all the files. For each file you can use a: ... | |
| Retrieve from database | 2/7/2008 |
| Q: I have some tables in database. How to retrive it and put it in Hashmap? For Ex: I have Tables like, ... A: This heavily depends on how your database is setup. For the most part you take your ResultSet that ... | |
| Propblem with Runtime.exec() | 2/7/2008 |
| Q: I was trying to restore my database using java. I had a problem with backup also,that i have solved. ... A: You will need to manually pipe in the file. E.g. FileInputStream in = new ... | |
| Question about random access files. | 2/6/2008 |
| Q: I want an extremely large array of extremely large numbers, so I have this in my code: long N = ... A: Yes, it will. An example of this would be: import java.io.*; ... File f = ... | |
| is string mutable/immutable | 2/6/2008 |
| Q: import java.io.*; class string1 { String str; void content(String str) { this.str=str; } ... A: The class String is immutable, The classes you made called string and string1 are as mutable as you ... | |
| long array size | 2/5/2008 |
| Q: I want an extremely large array of extremely large numbers, so I have this in my code: long N = ... A: You do realize that if you want the entire array in memory you will need almost 8 gigs of ram! If ... | |
| Retrieve from database | 2/5/2008 |
| Q: I have some tables in database. How to retrive it and put it in Hashmap? For Ex: I have Tables like, ... A: What you can do is map the key values from the table of each entry as the key of the hashmap and the ... | |
| SWT | 2/5/2008 |
| Q: how r u? i want to ask what is SWT in GUI and is there any book's which i can read about it thanx ... A: SWT is the standard widget toolkit. It is an advanced form of the AWT that uses OS GUI components ... | |
| Hashmap | 2/3/2008 |
| Q: What is the use of Hashmap? Can we use Hashmap to construct a JTree like this.. Ntwk ++Node1 ... A: You could represent a tree with a HashMap (You could also use a TreeMap if you want to keep stuff ... | |
| Plz Help me | 2/2/2008 |
| Q: how r u? i hope u r fine i want to ask a question not related to the programming but it's important ... A: Well it depends on what you mean by 'real' engineer. You could call yourself a software engineer, ... | |
| java j2se 1.5 run time error | 2/2/2008 |
| Q: i worte a simple prog in java..it compiled but at run time it showed exception in thread "main" ... A: Chances are there is a problem with the classpath enviromental variable. Assuming you are not using ... | |
| how java works | 1/30/2008 |
| Q: i wanted to know if there is any book or reference out that will teach how java is able to take a ... A: There are two parts to what you are asking: 1. Recognizing the syntax. This is the transformation ... | |
| How to read from MS Excell 2007(xlsx) | 1/28/2008 |
| Q: actually problem is that. HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) ... A: Probably not any pure java implementations are available at this time. If you are willing to use JNI ... | |
| question | 1/28/2008 |
| Q: why to introduce encapsulation in java?what is the use of encapsulation? ANSWER: You can find an ... A: Encapsulation doesn't have rules and regulations. Encapsulation simply hides data, possibly limiting ... | |
| java | 1/24/2008 |
| Q: My name is Shukla Parnash. I want to know that how I can create jar file and exe file of the java ... A: To create a jar you can use the jar utility in the SDK, or if you are using an IDE such as Netbeans ... | |
| hi | 1/22/2008 |
| Q: import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import ... A: Having not done any JSP code, I may not be able to help you on this. But I really would not have any ... | |
| JAVA | 1/16/2008 |
| Q: I am developing the Data Encryption Software in java Netbeans 5.5. I want to know that how I open ... A: To read the text of the File you will want to use a Reader. E.g. to read plain text that has the ... | |
| java | 1/14/2008 |
| Q: I'm a student and currently using netbeans IDE 6. Can i ask some codes how to communicate with my ... A: For this you will have to use JMF (see http://java.sun.com/products/java-media/jmf/index.jsp) I ... | |
| help me with this exersice | 1/9/2008 |
| Q: hey thanks for ur reply.I want to ask u about an exersice in the book here it is with my code: ... A: The modifications to the loops are good, but you still need to fix the "if( eindex < 9)" line to be ... | |
| help me with this exersice | 1/9/2008 |
| Q: hey thanks for ur reply.I want to ask u about an exersice in the book here it is with my code: ... A: There is a problem with the for loop since i is still incremented even if a seat is not assigned. ... | |
| reply 4 previous answer | 1/9/2008 |
| Q: ya,a lot of expert says that its more easy to using hashmap, but my lecturer want me to using SQL to ... A: Well using SQL in java is not too difficult, easier than doing it in C, there are vaious tutorials ... | |
| how to create a translator using java | 1/8/2008 |
| Q: good day sir. im a last year student in my college, and given a project to create a ... A: You could use SQL to do this, but with only 2000 words you could just as easily use one of Java's ... | |
| Java | 1/6/2008 |
| Q: I have a computer with windows xp, i am unable to run games from POGO on this computer, it tells me ... A: If its your computer you probably are an administrator. If you are an administrator you can open the ... | |
| Util.Date | 1/4/2008 |
| Q: how to find out number of sundays in a year through java program? A: One way (not the most efficient) using the Calendar class would be: int year = ...; Calendar c = ... | |
| JAVA | 1/4/2008 |
| Q: What is JAVA and how does a computer technician use it. Please reply in simple language as I am ... A: Java can refer to 3 related things: 1. A programming language that allows programmers to write ... | |
| Socket Programming | 1/3/2008 |
| Q: This may be a little long-winded but bare with me. I am trying to write a simple Client Server Java ... A: I don't know what the error is, but it might be with the parsing of the input into an integer... if ... | |
| question | 12/28/2007 |
| Q: class Hello{ static { System.out.println("All Experts Group"); System.exit(0); } } A: No question here, but... Yes, this program will print out "All Experts Group" and then exit even ... | |
| question | 12/27/2007 |
| Q: i want to find out number of occurance of each character in a given string for example --- Hello , ... A: This can be done with a simple HashMap: import java.util.*; ... String str = ...; ... | |
| java -swings(JTable) | 12/26/2007 |
| Q: How to create JTable using Vector class. please give me the example for creating table using Vector ... A: Although I don't recomend using the JTable constructor using Vectors. All you need is a Vector of ... | |
| Java visual program | 12/24/2007 |
| Q: I am in need of a program which takes a card design and adds customer input. The resultant card is ... A: Although I haven't used jsp that much... Lots of websites allow uploading images (e.g. forums to ... | |
| Icon | 12/24/2007 |
| Q: if i have code like below, can i put an icon into a path. for example i have array 5*5, can i put an ... A: It depends on what the 'icon' is. If its an instance of the Icon interface then you can simply call ... | |
| Regarding to Abstract classes in Java | 12/22/2007 |
| Q: An abstract class cannot be instantiated (why?) A: Abstract classes cannot be instantiated since they can contain abstract methods that do not have ... | |
| Package in java???? | 12/19/2007 |
| Q: What is package? Why are using package & Which purpose used to package? How are use to package in ... A: A package is like a namespace. It divides up classes and ensures that name collisions do not happen. ... | |
| Interface???? | 12/18/2007 |
| Q: What is interface? Why are use interface ? How are use interface ? Why multiple interface allowed ... A: See http://java.sun.com/docs/books/tutorial/java/concepts/interface.html Multiple inheritance is ... | |
| how methods and arguments work | 12/16/2007 |
| Q: What is a method and how do arguments work? Like when you print System.out.print("Text") how does ... A: System.out.println is a bit complex: 'out' is a static field in the system class that is of type ... | |
| args[0] | 12/16/2007 |
| Q: and i ve faced this problem, and hope to help me to solve it if you don't mind. this is my simple ... A: This code seems fine. Make sure when you are running the program you add the argument when you run ... | |
| java | 12/15/2007 |
| Q: what is use of Abstract classes,polymorphism and interface. when we will use in these three aspects? ... A: The class AbstractList http://java.sun.com/javase/6/docs/api/java/util/AbstractList.html is an ... | |
| asking a swing question | 12/13/2007 |
| Q: helllo i want a source code for rotating an image inside a thumbnail as like used in facebook.com ... A: I have not used facebook but, If you have a big enough area to draw the picture in, you can use the ... | |
| doubt in SCJP 1.4 | 12/10/2007 |
| Q: Given: 1. public class ExceptionTest { 2. class TestException extends Exception {} 3. public void ... A: The answer is not B, it is A. Since test() calls runTest(), and runTest() throws an Exception that ... | |
| String Inversion | 12/7/2007 |
| Q: i awnr to ask how to invert a string using recursion recursion is a must? example"Hello to ... A: Assuming you have String s = "Some interesting string" You can get the first word with: String ... | |
| Oop Concept in Core Java | 12/4/2007 |
| Q: If we defined constructor(User define construct) in base class & derived class but not define ... A: There is no problem in doing this, just make sure you make a call to the constructor you want to ... | |
| Java Network Traffic Generation | 12/3/2007 |
| Q: I want to develop a server program that upon request from client, sends TCP and UDP packets to ... A: You can probably use datagrams ... | |
| BFS | 11/30/2007 |
| Q: here i have dfs and idfs code for 9 puzzle solving, but how to use BFS? can u help me to make the ... A: You cannot use recursion for a bfs. Instead you have to keep a FIFO queue of the puzzles (such as ... | |
| overriding | 11/30/2007 |
| Q: how is method overriding experienced in java? for example there is no overriding if there are two ... A: Overriding occurs when one class inherits from another and the subclass defines a method that has ... | |
| Exiting Aprogram | 11/29/2007 |
| Q: i want to kone how to exit a program if the conditions are not executed in but don't use ... A: A program can exit normally if all the non-deamon threads end. For example, if you simply have a ... | |
| Use of inner classes | 11/29/2007 |
| Q: What is the use of "Inner classes". When we will use these classes. ANSWER: Inner classes allow you ... A: You can do everything you want without inner classes in java. They are there to help make organizing ... | |
| Use of inner classes | 11/29/2007 |
| Q: What is the use of "Inner classes". When we will use these classes. A: Inner classes allow you to do several things. 1. Naming, if you have a class whose only purpose is ... | |
| file streams | 11/21/2007 |
| Q: i want to ask how to (read) data from the console and save it in a txt file (write it) using ... A: If you want to use some other terminator e.g. user types in "END" you could add a check before ... | |
| file streams | 11/21/2007 |
| Q: i want to ask how to (read) data from the console and save it in a txt file (write it) using ... A: Here is a simple example of reading from a stream, and writing it out to the file specified until ... | |
| moving | 11/20/2007 |
| Q: How do you make a move random of the two dimension array with a 15 * 15 grid A: You can use the Random class to make random movements. If you are on the edge, you only have 3 ways ... | |
| How to find a number a float o not | 11/19/2007 |
| Q: i want to knoew how we can know that a number is float or not? please without converting the number ... A: If you want to know if a number can be represented exactly as an integer you could: double myDouble ... | |
| Menu popup with Dynamic Value | 11/15/2007 |
| Q: Hell Sir, Can we create menu popup with dynamic value. i.e. we require that user enter the value in ... A: Sure you can, just use setText on the JMenuItem to change the text of the menu item. You can also ... | |
| files | 11/15/2007 |
| Q: is there any Statement like S.o.p in java to print into file A: I am not familiar with S.o.p Usually when a user wants to print to a file they select print and ... | |
| connect algorithm | 11/13/2007 |
| Q: How are you? I'd like to ask for your opinion regarding a programming obstacle I have. I have a ... A: If the points are fairly clustered you could create a 2 dimensional array of linked nodes. The first ... | |
| help | 11/7/2007 |
| Q: good morning ,I'm not well in English but I try to explain you my problem (excuse me) I'm a student ... A: It is possible (but not simple) to call VB functions from Java (or the other way). To do this you ... | |
| puzzle | 11/6/2007 |
| Q: can u tell me why this code cannot work?? it said cannot find symbol. can u tell me what the ... A: You have a constructor that takes in an int[][]. In your main you have to supply that int[][]. ... | |
| help | 11/4/2007 |
| Q: good morning ,I'm not well in English but I try to explain you my problem (excuse me) I'm a student ... A: There is no special Java package for Arbic. You do not need to do anything special to display ... | |
| java doubt | 11/3/2007 |
| Q: I would like to create a textbox, a button and few other swing components and would like to ... A: For a dynamic UI as you have described the simplest solution would be to not use an IDE editor to ... | |
| String | 11/1/2007 |
| Q: How can we make a user enter a String from the console as an input thanx Egypt CSD A: import java.io.*; ... BufferedReader inputReader = new BufferedReader(new ... | |
| Help | 10/30/2007 |
| Q: 1.Write a program to produce the following form. 1 1 2 1 1 2 3 2 1 1 2 3 4 3 2 1 ... A: 1. There are various ways of doing this... here is a "clever" solution. You could also use a second ... | |
| Notes initialization failure - err 421 | 10/29/2007 |
| Q: im working on support tool for out team and I have to use Lotus Notes to send mails and fill ... A: Instead of changing the path variable, I would simply set the start directory to the location you ... | |
| A Judagrali series | 10/26/2007 |
| Q: I'm the java student doing web development using servlets and JSP's can you please help me with this ... A: Yes, the ^ is the bitwise operator in java, but ^ is used as the power operator in many other ... | |
| A Judagrali series | 10/25/2007 |
| Q: I'm the java student doing web development using servlets and JSP's can you please help me with this ... A: The requirement of P being prime here is not needed, since any prime in the form 2^p-1 will have p ... | |
| java | 10/21/2007 |
| Q: i am going to make a simple DFS, from the coding below, is it right? and can u help me if i want to ... A: The program you have does not properly solve mazes, it will back up once, and assume the area below ... | |
| how to access winamp controls(buttons like play etc ) through java program | 10/10/2007 |
| Q: sir t want to control winamp buttons through java program. e.g if any command like play is invoked ... A: Since winamp doesn't have a java interface, you would either need to make one yourself (very ... | |
| java random character | 10/8/2007 |
| Q: hey! just wanna ask how will i randomize my set of questions? like if i have 3 sets of questions ... A: You can use the Random class in java.util to get random numbers... for 'shuffling' things what you ... | |
| Polymorphism definition | 10/6/2007 |
| Q: Can you please give me a definition of polymorphism in Java ? I do have a vague idea but ... A: Polymorphism allows you to create a subclass of an existing class and redefine how a method works, ... | |
| method overriding | 10/4/2007 |
| Q: For method overriding, whether the return types and the number of arguments in both super and sub ... A: The method parameters need to match in order to override the method. However (in java 5) the return ... | |
| abt to start a project | 9/27/2007 |
| Q: sir i am abt to start my work upon a project which serves as a part of my college curriculam. but i ... A: There are various interesting projects you could start, but this largely depends on the amount of ... | |
| java | 9/25/2007 |
| Q: what is the difference between hashcode and reference number in java? A: The hashcode for each java object can be overriden by the implementing class and may not be unique ... | |
| Cloning | 9/20/2007 |
| Q: can u explain me a java program that uses clone A: The clone method (in object) will create a new instance of the class with all the values of the ... | |
| getch() in JAVA | 9/12/2007 |
| Q: please could you tell me how to replace the c instruction getch() with something else in Java but ... A: For console input java doesn't have any equivalent to getch. If you really need that function you ... | |
| write result set to diffrent format(csv,xml,pdf,html) | 9/11/2007 |
| Q: How to write jdbc result set in to diffrent formats based on user selection(csv,html,pdf,xml) and ... A: This depends on the data and must be done differently for each format. csv would be fairly simple ... | |
| Java + Linux + Remote Boot = Focus problem | 9/6/2007 |
| Q: this is the first time I ask a question at AllExperts and looking at your profile I saw that you had ... A: My best guess would be that a component (possibly invisible) that is loaded post boot is taking ... | |
| write into csv file | 8/29/2007 |
| Q: I want to write some data into a csv file fetched from the database using java. Can you please help ... A: import java.io.FileWriter; //add to import list import java.io.Writer; ... String fileName = ... | |
| write into csv file | 8/29/2007 |
| Q: I want to write some data into a csv file fetched from the database using java. Can you please help ... A: Writing a csv file is very easy. e.g. import java.io.*; ... try { FileWriter writer = new ... | |
| problem with swing delay | 8/28/2007 |
| Q: Im currently working on small tool which should help us in our work and I found very interesting ... A: If you are not updating the JList on the gui thread, updates may not happen properly. Use: ... | |
| bit representation | 8/26/2007 |
| Q: PLease can you give me a detailed explanation about why range of byte datatype is -128 to 127. Since ... A: The first bit is used for the sign the other 7 are for the value. Languages that have a max value of ... | |
| Host Access Class Library X Host Access Beans | 8/14/2007 |
| Q: autECLPS...) to do this. But package (the only I was able to found) com.ibm.eNetwork.ECL contains ... A: I haven't used this library myself. If the method is missing from the java library (trying looking ... | |
| math in computer science | 7/21/2007 |
| Q: i would like to know why is math such an important subject in computer science i would like to know ... A: Computer science is used to solve problems using computers. Computers are not smart, you have to ... | |
| Java messenger program | 7/20/2007 |
| Q: i am currently constructing a java messenger program that makes use of applets-servlets ... A: Yea, I don't think that there are much in the way of java IRC servlets, and if there were it would ... | |
| Java messenger program | 7/20/2007 |
| Q: i am currently constructing a java messenger program that makes use of applets-servlets ... A: I would just use one of the IRC servers as the back end. There are plenty of IRC java clients (and ... | |
| Servlet | 7/18/2007 |
| Q: I want the source code to upload a file using http post method using servlet. I want to post my file ... A: I don't have experience with servlets. If I were doing this with a simple standalone java ... | |
| Java doesn't work | 7/12/2007 |
| Q: I downloaded the free version of Java, then went to Internet Options and under Advanced checked ... A: The java console is not necessary to run java, however if the option appears in your browser java is ... | |
| java not working!!!! | 6/30/2007 |
| Q: ok now my java is not working ... as u can tell.. i have dowloaded several java .. applets .. i ... A: If you still can't uninstall the previous versions, you will simply have to live with the stale ... | |
| java not working!!!! | 6/29/2007 |
| Q: ok now my java is not working ... as u can tell.. i have dowloaded several java .. applets .. i ... A: Seems like you have stale entries in the add remove programs. If you don't want java you can ... | |
| Programming with sound input | 6/25/2007 |
| Q: I am interested in 'reinventing the wheel' of speech recognition. Would Java be an appropriate tool ... A: Java has the capabilities to read sound from a microphone, and output sound though a speaker. Java ... | |
| Flash Frontend to Java App | 6/25/2007 |
| Q: I've written an application in Java, doesn't do much and interaction is limited to entering numbers ... A: If you use a client server model you can have Java on the back end while flash is on the front end. ... | |
| not getting correct output | 6/20/2007 |
| Q: i m working on image processing. i have two classes GrayImage and Thresholdf. The problem is once ... A: This is the expected behavior. You are creating an image with a filter, any changes to the image ... | |
| System Date | 6/12/2007 |
| Q: I want to write a Java program to capture the system date on everyday. I want to capture the system ... A: You can use System.currentTimeMillis() to get the current system time (as the number of miliseconds ... | |
| JTree with Checkbox, separating node highligth and checkbox tick/untick operation | 6/9/2007 |
| Q: I want to make a JTree with checkboxes. The checkbox selection should be independent of the node ... A: Making a tree with check boxes has been done before and doing a web search will reveal several ... | |
| removeAll java program | 6/7/2007 |
| Q: Can you assist with a problem I'm trying to solve; I have to write a removeAll java program that ... A: The length of the array parameter is really not needed since you can simply say: myArray.length to ... | |
| Question | 6/6/2007 |
| Q: I am trying to make a java code (using TEXTPAD) and having some difficulty. Right now in the program ... A: When you receive the number the user enters, you get it as a String. So all you have to do is ... | |
| GUI Program Assistance | 6/3/2007 |
| Q: can you pls help me with a project I'm workig on? I need help writting a GUI program that convert ... A: You cannot compile on the commandline like that. You first create a file Uppercase.java and save ... | |
| GUI Program Assistance | 6/3/2007 |
| Q: can you pls help me with a project I'm workig on? I need help writting a GUI program that convert ... A: You need that in a method. If you want to display it you will also need to output it to the console. ... | |
| convert urdu text to unicode | 6/3/2007 |
| Q: I could not find a converter, to translate urdu text to unicode. Could you please show me where is ... A: Unicode is an encoding. Urdu is a language. If the text is encoded in a non-unicode encoding that ... | |
| Java | 5/30/2007 |
| Q: How can i pass result values from one page to other page when you click on hyperlink and the ... A: I can't help you with this too much since I am not not familiar with jsp. On a side note, do not ... | |
| unicode block in java textbox | 5/29/2007 |
| Q: setInitialInputMode("UCB_GREEK");this is a method in java textbox.(1)please tell me what its ... A: I assume that method is used to provide a hint as to what input locale to use. Not all devices will ... | |
| Javac and JDK--Elementary Question | 5/28/2007 |
| Q: I just began learning Java, and I am trying to use the "javac" compiler. I have downloaded three ... A: javac is in the bin folder of the sdk. On windows it is located at: c:\program files\java\<jdk ... | |
| some automation | 5/28/2007 |
| Q: Can java help me do these things? posting a keyword into the query box of some forum(web-based) ... A: Java doesn't really support the manipulation of web controls. You could however bypass this by doing ... | |
| highscores | 5/23/2007 |
| Q: Sir, I am new to java and i want a code for storing five scores usaing files and vector? A: A vector is just a data structure that works like a resizable array. If you are going to use exactly ... | |
| Problem on retrieving Unicode Data | 5/23/2007 |
| Q: I have entered data in the following manner in the Database String Encoder = ... A: Data Type Mismatch means that the value entered in does not match the value type of the column. If ... | |
| Replacing \\ with \ | 5/22/2007 |
| Q: I want to replace the following string with single slash. String s = ... A: the single slash doesn't exist outside the java source code. It merely tells java to use the unicode ... | |
| Unicode not transformed to Urdu | 5/22/2007 |
| Q: Its Tariq Again... :) I have not yet successfully transformed Unicode to Urdu in Swing's JTextArea. ... A: If you are having problems with using NVARCHAR, you could encode the string into UTF-8 before ... | |
| Unicode not transforming | 5/18/2007 |
| Q: I have successfully generated the Unicode of my Local language(Urdu) and saved that in DB. But when ... A: What do you mean by it shows unicode? Unicode includes Urdu characters. You may want to check that ... | |
| print in java | 5/15/2007 |
| Q: plese give me a solution to the following Question. How to print a bulk of data automatically in ... A: You should look at the printing tutorial: ... | |
| JFrame and Urdu | 5/14/2007 |
| Q: I have a Unicode String. Its a Urdu name (USMAN) String text = "\u0639\u062b\u0645\u0627\u0646"; ... A: Assuming the database can handle the Unicode string it should work, assuming the font can handle it. ... | |
| Urdu Language Display in Swing | 5/14/2007 |
| Q: I have developed a Swing application. Application is a Testing application which shows MCQs ... A: If the database is using a unicode string to store the questions you can easily retrieve them as ... | |
| Urdu Language Display in Swing | 5/14/2007 |
| Q: I have developed a Swing application. Application is a Testing application which shows MCQs ... A: I guess I don't understand your problem. You can dynamically change the text in a JLabel by just ... | |
| Question on overriding | 5/13/2007 |
| Q: as we all know that the legal path for overriding a method with a different access type: private -> ... A: When you access the method though a reference to the superclass you have to make sure the method is ... | |
| Urdu Language Display in Swing | 5/11/2007 |
| Q: I have developed a Swing application. Application is a Testing application which shows MCQs ... A: This depends on how the application was implemented. Are you sure you want to display English and ... | |
| images in javaswing | 5/8/2007 |
| Q: i want to diplay an image in JFRAMES,but i am unable to do it,can u plz help me A: The easiest way to display an image is to use a label that has no text, and uses an ImageIcon as its ... | |
| java--edit the hour in a clock. | 4/23/2007 |
| Q: I am working with this program: http://users.erols.com/ziring/java-samp.html#clock ... A: What you need is a local variable to keep track of the time difference (keep it in the ClockLabel ... | |
| java--edit the hour in a clock. | 4/22/2007 |
| Q: I am working with this program: http://users.erols.com/ziring/java-samp.html#clock ... A: Your current clock is a label that mirrors the current system time. What you could do is display an ... | |
| reading multiple numbers from one line | 4/18/2007 |
| Q: I intend to paste data (non-int numbers, multiple columns) from excel to my text pane, and have the ... A: 1: String[] numbers = myString.split("\\t"); for(int i = 0; i < numbers.length; i++) { //add the ... | |
| tables | 4/17/2007 |
| Q: for example, the lobbys in yahoo games there is a scrollable table with buttons and text and lines ... A: If you are using swing you can use JScrollPane to accomplish this. E.g. if you had: JFrame frame = ... | |
| make java to be application file | 4/15/2007 |
| Q: i have a java file with class file..how can i convert all my file to be application file(.exe)? A: Before you do, you should consider that creating a jar will work just like an exe, in that clicking ... | |
| java swing | 4/13/2007 |
| Q: I am new to java swing and GUI creation in general; can you tell me how I can "pass" along an event ... A: The easiest way to accomplish this is to simply have a reference in your login page to the main ... | |
| core java | 4/7/2007 |
| Q: main method belongs to which package, or are we overriding main method in our class, and what is the ... A: main method can be in any package, in any named class. Main is a static method, there is no ... | |
| Creation of Object | 4/6/2007 |
| Q: I m learning core java..and wanna ask u that EXCEPTION is an object..which always make at ... A: static methods and variables are independent of any object. Static methods cannot call instance ... | |
| Package | 4/4/2007 |
| Q: .I m a beginner in java..And want to ask u that how to link several user made packages to one ... A: well if the source files are together or they are compiled in a jar, you can simply import them. ... | |
| Creation of Object | 4/4/2007 |
| Q: I m learning core java..and wanna ask u that EXCEPTION is an object..which always make at ... A: There are no compile time exceptions. The ClassNotFoundException (and others) are thrown when you ... | |
| does blue j support generics | 4/3/2007 |
| Q: 4 public class EqualityTest { public static < T extends Comparable<T>> isEqualTo(T x, T ... A: Hrm... the source switch for the compiler probably got set somehow. My bess guess is to check the ... | |
| Java assignment | 3/30/2007 |
| Q: I am just writing to ask if you are familliar with arrays and methods. I have an assignment due, and ... A: you can declare arrays using the [] syntax. E.g. To create an array of 5 elements (all initially set ... | |
| java | 3/28/2007 |
| Q: this is geeta. my question is 1. how to run java in linux operating system because i know only on ... A: 1. You can go to http://java.sun.com for the sdk and the runtime for the platform of your choice. ... | |
| problem in xtremepc2 source code | 3/26/2007 |
| Q: i've read in one of your posts that you worked with xtremepc 2.0. the link to that page is : ... A: Well its probably only with one \ not two. Since in java strings you must escape out the \. e.g. ... | |
| java help !! | 3/24/2007 |
| Q: Assume that there are two machines A and B where A will provide the public key for RSA (i.e. ... A: The easiest way of doing this is to use the isProbablePrime method in BigInteger. E.g. BigInteger ... | |
| file matching | 3/23/2007 |
| Q: I created two files, one that contains account number and balance and the other account number and ... A: NullPointerException is a very common error that arrises when you try and call a method (or access a ... | |
| monitoring system | 3/22/2007 |
| Q: .i hope u can help me..i am a new user java programming.so lot of thing that i still cant ... A: Once you got the proxy up and running, you just do a lookup into the data base when a connection to ... | |
| Trying to write to text file but it just ends up erased. | 3/8/2007 |
| Q: My need is to update a text file by inserting a line of text at a line number determined at run ... A: The problem is there is no way to insert data into a file. You can append or overwrite, but if you ... | |
| JNI & local references passed from native code to JVM | 3/6/2007 |
| Q: I'm trying to get clarification on what i've read about local references. I have some native code ... A: The jvm keeps track of all references, the JVM simply removes all local references when native code ... | |
| JAVA RTE switches | 2/28/2007 |
| Q: I am running: jre-1_5_0_11- Windows i586-p-ifw-Xmx768M.exe by Sun Microsystems. Inc. version ... A: You can use 'java -help' to get a list of standard commands. You can use 'java -X' to get a list of ... | |
| slidehow | 2/25/2007 |
| Q: I've been working on an image viewer/editor for the last couple weeks. Now I want to add a slide ... A: The problem is that you are trying to do a slide show on the event thread. Anything you do on the ... | |
| java applet | 2/23/2007 |
| Q: How can i load the information shown by an applet on the browser into a text file?? A: If the text file is located in the same place as the .clas file for the applet (or application) you ... | |
| program languages and their use | 2/23/2007 |
| Q: i know that among the most popular computer languages there is C++ and java. i would like to know ... A: The biggest influnence when choosing a programming language for a product, is to determine what ... | |
| arraylist | 2/20/2007 |
| Q: I need the following code to firstly look at a value that is stored within a combo box, take this ... A: 1. classes in java are case sensitive. You must use String not string. 2. You cannot reuse variable ... | |
| components in swing | 1/7/2007 |
| Q: i have a simple question how do you remove a component (such as a button or even a panel) from ... A: just call remove(component) on the jframe/jpanel to remove a component. If a component is already ... | |
| Java compile error package does not exist | 12/29/2006 |
| Q: This should be an easy error to fix but I must be doing something stupid. I am using the Java3D ... A: Chances are the Java3D library does not exist on the other person's computer. All extension ... | |
| i really wanan hack runescape.. | 12/24/2006 |
| Q: please can you teach me how to hack runescape (i havnt ever hacked a game before..) is it possible ... A: When I made a program way back in the day, I had 3 years of java experience, and it took me a couple ... | |
| Generics in Java 1.5 | 12/17/2006 |
| Q: I've tried searching the web for 2 days without answer. I have a ApplicationHelper.java that ... A: Well the code itself would not case the problem. It is possible that when the jar is created some ... | |
| SCJP | 12/8/2006 |
| Q: Question No 52 Exhibit: 1. public class test { 2. public static string output = “” 3. 4. public ... A: 52: If an exception is thrown in a try block and caught in a finally block, the rest of the try ... | |
| SCJP | 12/8/2006 |
| Q: Exhibit: 1. interface foo { 2. int k = 0; 3. ] 4. 5. public class test implements Foo ( 6. public ... A: For the first one, the answer is not A. There are a lot of compiler errors. A is the only incorrect ... | |
| runescape bot creation | 12/8/2006 |
| Q: i was wondering if you could tell me how to create a bot to increase all my stats in Runescape 2 A: Creating a bot requires you are able to implement a program that gets past all the anti cheating ... | |
| SCJP | 12/5/2006 |
| Q: QUESTION NO: 135 Given: 11. String a = “ABCD”; 12. String b = a.toLowerCase(); 13. b.replace(‘a’, ... A: The replace method in String does not modify the String, rather it returns a new string with those ... | |
| SCJP | 12/5/2006 |
| Q: QUESTION NO: 124 Given: 1. public class Test { 2. private static int[] x; 3. public static void ... A: 124: x is never assigned a value so it is null. Trying to index a null value will result in a ... | |
| SCJP | 12/5/2006 |
| Q: QUESTION NO: 117 Given: 1. public class X implements Runnable { 2. private int x; 3. private int y; ... A: B can be elimited since the increment of x and y are in a synchronized block, thus nothing can ... | |
| SCJP | 12/4/2006 |
| Q: QUESTION NO: 52 Given: 1. class Super { 2. public int getLenght() { return 4; } 3. } 4. 5. public ... A: The method getLength in Class Sub is overriding its super class method, but has a different return ... | |
| SCJP | 12/4/2006 |
| Q: QUESTION NO: 70 Given: 1. public class X { 2. public X aMethod() { return this;} 3. } 1. public ... A: A: Cannot be added since it matches the name and parameters of an existing method, but the return ... | |
| SCJP | 12/2/2006 |
| Q: QUESTION NO: 107 Which three demonstrate an “is a” relationship? (Choose three) A. public class X { ... A: The "is a" relationship is the same as the instanceof operator. A. X y = new Y(); //valid B. Shape ... | |
| SCJP | 12/2/2006 |
| Q: QUESTION NO: 106 Given: 11. try { 12. if ((new Object))(.equals((new Object()))) { 13. ... A: Line 12 has a few problems. When you create a new object you need to use the constructor syntax, ... | |
| SCJP | 12/1/2006 |
| Q: QUESTION NO: 31 Given: 1. public class Alpha1 { 2. public static void main( String[] args ) { 3. ... A: The answer is B, although each number is on a different line. i starts at 0 outside the loop. i is ... | |
| SCJP | 12/1/2006 |
| Q: QUESTION NO: 22 Which statement is true? A. catch(X x) can catch subclasses of X. B. The Error class ... A: A: try { //code to try } catch (Exception e) { //exception to catch. } if any subclass of ... | |
| SCJP | 12/1/2006 |
| Q: QUESTION NO: 1 Given: 1. public class Test { 2. public static void main(String args[]) { 3. class ... A: line 6 is assigning a new instance of Foo to an Object reference, the cast here is not needed. ... | |
| runescape account hacking/cheats | 11/30/2006 |
| Q: ok what do you mean by key logger and how would i do this, laso is there any cheats at all for free ... A: A keylogger is a back door in a victims computer that records keystrokes as they type them. These ... | |
| SCJPJAVA | 11/29/2006 |
| Q: QUESTION 24 Given: 1. package foo; 2. 3. import java.util.Vector; 4. 5. private class MyVector ... A: Outer classes cannot be private, they can only be public and "pacakage" (no access modifier). In ... | |
| SCJP JAVA | 11/29/2006 |
| Q: QUESTION 19 Given: 1. public class Test { 2. public int aMethod() { 3. static int i = 0; 4. i++; 5. ... A: Line 3 of Test has a static variable in a method which is not allowed. The following 'alternatives' ... | |
| SCJPJAVA | 11/29/2006 |
| Q: QUESTION 15 Given: 1. class A { 2. protected int method1(int a, int b) { return 0; } 3. } Which two ... A: C is ok, since the second parameter is not the same type as the second parameter in A's method1. If ... | |
| Mandar(JAVA) | 11/28/2006 |
| Q: ClassOne.java: 1. package com.abe.pkg1; 2. public class ClassOne { 3. private char var = 'a'; 4. ... A: There is a compiler error on line 5 and 6 of ClassTest.java. The method getVar() in class ClassOne ... | |
| runescape account hacking/cheats | 11/27/2006 |
| Q: i was wondering what are the go about on hacking runescape accounts . i know it can be done because ... A: hacking accounts generally is related to having a keylogger installed on someones system that ... | |
| runescape hack | 11/25/2006 |
| Q: I read the article you had answered about hacking into runescape and making bots that would run ... A: Unless you have a good amount of knowledge of java, I'm probably not going to be able to help you ... | |
| how to add a hyperlink to a dialog | 11/24/2006 |
| Q: I want to add a hyperlink on a JDialog box, which on clicking will open a file. I simply added ... A: If you want to anything more than basic HTML you should use the JEditorPane class instead of a ... | |
| How to get a class in another classloader? | 11/24/2006 |
| Q: I know there are 3 classloaders in tomcat server, one is for server application the classpath of ... A: This depends on how the classloaders are organized. If classloader A is an ancestor of classloader C ... | |
| Java Project | 11/23/2006 |
| Q: Do you know how to create a class? Yes Do you know how to make a method? Yes, but not sure how it ... A: Since the issueBook method for each sub class will be different, you can declare it abstract, and ... | |
| Java Constuctors | 11/23/2006 |
| Q: What are Java Constructors? Please explain with detail and exampes. Also show me some Java programs ... A: A constructor is the method that is called to create an instance of a class. If you do not provide a ... | |
| javaw versus java -jar | 11/17/2006 |
| Q: So, I wrote a java application that runs on my own machine by either double-clicking the JAR file ... A: If you look in the file accoication the jar you should see exactly what is run. Jar files use the ... | |
| group by in java | 11/7/2006 |
| Q: Is there any "group by" function like SQL group by in java? Thanks, lzzzz A: Not really, but its not to hard to do in a few lines of code. Although this depends on the data type ... | |
| Need Comments plz | 11/6/2006 |
| Q: Harper, I am a 1st year student at university and was wondering if you can be of any help. I have ... A: I'm more of a Java person, but I will do my best here. Note that this code should never be used in ... | |
| JTable to XML and XML to JTable | 10/31/2006 |
| Q: How do I convert a JTable to a XML file and a XML file to a JTable? I searched a lot on the ... A: Please see: http://java.sun.com/products/jfc/tsc/articles/persistence4 Depending on the content of ... | |
| getting processor id | 10/30/2006 |
| Q: sir, I wanted to have a unique aunthentication procedure based on processor id. regards, ... A: I don't think there is anyway of getting what you want. There are probably some tricks you can pull ... | |
| java | 10/24/2006 |
| Q: 1.what is the use of tagged interfaces in java? explain me with an eg taking SingleThreadDemo ... A: 1. Tagged interfaces are used to denote a class or instances of a class specially. Serializable is ... | |
| getting processor id | 10/21/2006 |
| Q: sir, In Java, is there any OS independent way to get the processor/CPU id. regards, sreekanth. A: What do you mean by id? You can determine the architecture of the system by using: ... | |
| desktop file search | 10/19/2006 |
| Q: sir, for traversing through directories, i am using the following code. but its not able to compile ... A: The code segement is somewhat incomplete. I did not recieve any compiler warnings when I tried to ... | |
| desktop file search | 10/16/2006 |
| Q: sir, 1. i am using core java. i want to find the path of a particular file in my system. is there ... A: When java installs it should be in the path for most systems. 1. There is no good way to do file ... | |
| Question | 10/4/2006 |
| Q: I am a senior in high school and have been asking many people to help me answer a question but I ... A: Runescape was created by a small set of developers, it would take a very long time for an individual ... | |
| Executing a java program from another directory | 10/2/2006 |
| Q: Sir, My problem is: I have one java program in the current directory "C:\Current" by name ... A: First, java.exe does not take a directory structure to start, rather it takes the name of the class. ... | |
| asking for tutorials | 10/2/2006 |
| Q: im a programmer but of different language,im reading right now about mobile application in Java ... A: I haven't really done much with mobile devices, but http://java.sun.com/developer/onlineTraining/ is ... | |
| jar file | 9/26/2006 |
| Q: I am using JCreator to code a simple GUI program. Now, what I'd like to do is to convert the java ... A: I haven't used JCreater, so I can't help you much. The problem you are running into however is that ... | |
| query on interfaces and abstract classes | 9/21/2006 |
| Q: i have a small query regarding when to use interface and when to use abstract classes.... i have a ... A: Interfaces cannot have fields, and do not define constructors, and all methods have the same ... | |
| transfering data between swing components | 9/20/2006 |
| Q: Artemus, I have a program that has the main container. Inside, it will have 4 panels named panel1, ... A: If you are not using a layout manager the component can resize itself, after doing so you can ... | |
| printing | 9/19/2006 |
| Q: How can i print out the output of the data program? And how can create a data file that i could see ... A: What is "the data program"? If your running an external process you can use the ProcessBuilder ... | |
| Executing a java program from another java program with platform independence | 9/18/2006 |
| Q: Sir, You have mentioned in the answer of my previous question that for platform independence we need ... A: If you want to wait until the process is finished you can read from the processes stdout and write ... | |
| Regarding Java IDE creation in java | 9/18/2006 |
| Q: ------------------------- Followup To Artemus Harper Dear Sir, Thanks a lot for taking concern to ... A: Syntax highlighting is not easy, but its considered basic by may IDEs. See: Read: ... | |
| Regarding Java IDE creation in java | 9/16/2006 |
| Q: ------------------------- Followup To Artemus Harper Dear Sir , Thanks for ur reply.I created a ... A: Basic features for an IDE: Synatx highlighting Goto line number Multiple files open at once. ... | |
| Running java program using RunTime.getRunTime().exec() | 9/15/2006 |
| Q: Sir, can u tell me how to ececute a java program which is already compiled using another java ... A: Runtime.exec method does not do shell commands. If you want to execute shell commands use cmd.exe /C ... | |
| Regarding Dialogs in java | 9/12/2006 |
| Q: ------------------------- Followup To Mr.Artemus Harper Thanks for ur reply.Sir How to get the ... A: I haven't used swt. Using swt is not trivial. You can download swt from www.eclipse.org/swt/ The ... | |
| Create a window in Java with 2 circles ramdomly move in the window | 9/10/2006 |
| Q: 1st, I'd like to thank you. 2nd, how can I draw the 2 lines from the top corner to each of the ... A: In order to draw a line to the corner of a circle you will have to calculate where that is ... | |
| Create a window in Java with 2 circles ramdomly move in the window | 9/7/2006 |
| Q: I am new with GUI Java. I try to write a program which will create a window (which I did) with 2 ... A: What you want it to have a timer object that updates the the variables on where the circles and ... | |
| application memory space | 8/30/2006 |
| Q: I have three questions about application memory management, 1.does an application run within its ... A: 1. It depends on the OS, but usually yes. 2. Again, depends on the OS, but most desktop OSs handle ... | |
| Dictionary | 8/28/2006 |
| Q: I saw your explanation about helping creating a dictionary...and I want to ask ... A: MSWord is a bit complicated, since there is no easy way to get at the format. What you can do is ... | |
| applet signed certificate | 8/28/2006 |
| Q: i signed my applet and i got six months free certificate,but now my problem is can i get certificate ... A: No, you have to resign and redeploy your applet every six months. This is designed as a security ... | |
| getting images from remote machine using applets | 8/23/2006 |
| Q: iam woring in larsen and toubro mysore,india. iam new to core java. in my project i compleated ... A: 1. You can communicate with the server the applet is located on. For other computers you will have ... | |
| What is Its Purpose of Java? | 8/22/2006 |
| Q: What purpose does Java, Java Script, etc. really serve? The latest Java, or Script downloaded into ... A: First: Java and java script are two different enties, you can have one without the other. Java is ... | |
| log information and log level | 8/11/2006 |
| Q: A Logger such as Log4j has several logging levels -- debug, info, warn, error, fatal, I wonder what ... A: Its mostly up to you. The idea is that someone may only want to look at warn logs and higher to see ... | |
| Buttons are not shown when drawImage() method is used | 8/1/2006 |
| Q: Sir I replaced paint() method with paintComponent() but the result is same as before.Sir ... A: When you say getImage the image retured is not always fully loaded, trying to paint the image before ... | |
| Buttons are not shown when drawImage() method is used | 7/31/2006 |
| Q: Sir In my swing window, I am using two buttons and an image. I am using fillRect() method to ... A: When you are using swing you should not use the paint method. Since that method also paints the ... | |
| project Titels | 7/28/2006 |
| Q: Respected Sir, i m doing Bachelor of IT Engg. from RSCOE (Pune university) and i m in final ... A: Java has a rather large scope on what it can do, focusing on what you studied is best. Java is good ... | |
| makin dictionary in java | 7/24/2006 |
| Q: Followup To Question - Well i want to make an English dictionary in java, but i couldnt get any ... A: If you just want a dictionary for spell checking you can use a HashSet instead. E.g. ... | |
| makin dictionary in java | 7/21/2006 |
| Q: Well i want to make an English dictionary in java, but i couldnt get any idea dat how i will do ... A: As I said this is why you would use a HashMap. E.g. import java.util.*; HashMap<String,String> ... | |
| Java | 7/21/2006 |
| Q: I am having a String object s= "7/21/06"; i want ot change the string object to date object. ... A: You should use the DateFormat to read in and write out dates. E.g. DateFormat myDateFormat = new ... | |
| makin dictionary in java | 7/19/2006 |
| Q: Well i want to make an English dictionary in java, but i couldnt get any idea dat how i will do ... A: You can use a HashMap to store all the words to their definations. If the Dictionary is large it ... | |
| java | 7/19/2006 |
| Q: what is static?why we use static? A: static means that the field/method is independent of instances of the class its declared in. All of ... | |
| Simple java applet problem | 7/17/2006 |
| Q: Okay, First off, I'm an experienced programmer, looking to get into coding applets. I have coded ... A: I believe that gcj generates executable code, not code that is run in the java vm. This error means ... | |
| Synchronization | 7/17/2006 |
| Q: What synchronization constructs does java provide ? How do they work? A: When you synchronize on an object your thread gains exclusive use of that object until ... | |
| How can I know weather a printer is on/off? | 7/11/2006 |
| Q: I understand, So what does PrinterStateReasons and printerState objects should provide if not a ... A: The PrinterStateReason is any possible known states the printer is in. It might be none of these, ... | |
| java -cp resourcedir;lib.jar -jar main.jar | 7/10/2006 |
| Q: I encounter a problem with "java -cp resourcedir;lib.jar -jar main.jar", is java looking for ... A: Although I have not tried this myself. It is possible classes loaded via the -jar flag will only ... | |
| Help on Static Inner Class | 7/10/2006 |
| Q: What is the difference between the static class and static inner class in Java? A: static classes have to inner classes. Differences between static classes and non-static classes: ... | |
| How can I know weather a printer is on/off? | 7/9/2006 |
| Q: The PrintServiceLookup.lookupPrintServices method returns a list of all the installed printers. of ... A: Its not really possible to determine if the printer is on or off, the printer might be a network ... | |
| JAVA | 7/8/2006 |
| Q: I created a form with a button in java. How can I open an application e.g. (Microsoft calculator) ... A: Warning: Executing external applications may fail on different operating systems. ... | |
| Calendar in Java | 7/8/2006 |
| Q: I want to write a code in java that constructs a gegorian calendar, where the months are represented ... A: Why write code for a gregorian calendar when one already exists (java.util.GregorianCalendar)? See ... | |
| Where is Iterator Interface Implemented? | 7/6/2006 |
| Q: I am using the java.util.HashSet class, which has an Iterator method that returns an Iterator. I ... A: Each class in java.util implements its own iterator. These iterators are private classes, and ... | |
| Drag and Drop audio and video files from windows explorer to Applet? | 6/24/2006 |
| Q: ...... Can u help me out to how to Drag and Drop audio and video files from windows explorer to ... A: In order to allow drag and drop to do anything usefull with Applets it must be trusted by the user. ... | |
| Swings Applets | 6/23/2006 |
| Q: sir i have problem with swing applet.when i call repaint() in swings it will not clear back ... A: When repaint it called, then at some latter time (generally within .5 seconds) the paint rotunie is ... | |
| FTP | 6/22/2006 |
| Q: i have some source code to make a FTP. but i'm not sure how to make my FTP can block all data ... A: The term copyright material is rather undefined. Copyrighted by who? Do you mean registered by US ... | |
| get the user names from Active Directory domain | 6/20/2006 |
| Q: Currently i am working on weblogic portal regarding the SSO(single Sign on).I just wanted to know ... A: You can use System.getenv(String) method to get various enviromental variables, some of which ... | |
| JTextArea and caret postion | 6/18/2006 |
| Q: Sir, I was making one application which has 2 JTextArea's and 1 button. When i enter some text in ... A: The problem is that when you clear the text the enter key is still being processed by the text area, ... | |
| Regarding Browser plugin in JAVA | 6/18/2006 |
| Q: "Hi, I want to develop a plugin for browser (for IE,Mozilla,safari...). Can i do it in java? If yes ... A: Each browser uses different technonlogy for plugins, so some customization for each browser would be ... | |
| JTextPane and mouse disabling | 6/14/2006 |
| Q: Sir, Can u tell me how to disable mouse right click and left click buttons when put on a JTextPane. ... A: If you subclass the JTextPane you can override the processMouseEvent(MouseEvent) method, and simply ... | |
| What is the machanism of super() | 6/13/2006 |
| Q: What is the machanism of super() (algorithim or code used in implementing in Super()). How it dicide ... A: When you use super each class above yours is checked to see if it has that method or constructor ... | |
| Java Virtual Machine Launcher | 6/3/2006 |
| Q: When I log in I get a box appear on my desktop which says Java Virtual Machine Launcher Could not ... A: There is something set to startup when you log in that is a .jar file. The jar file for some reason ... | |
| Java Question | 5/31/2006 |
| Q: I am preparing for my java final exam and i came across 2 questions: a) Rank the following ... A: a) Determining what grows the fastest depends on what is going to produce the biggest number for a ... | |
| Bitwise operators in Java | 5/20/2006 |
| Q: Good morining sir, Could please tell me about Bitwise Operators in Java, what is the use of those ... A: > Could please tell me about Bitwise Operators in Java The bitwise operators: << shift left >> shift ... | |
| Swings and date, time | 5/13/2006 |
| Q: Can u please tell me how to change time after every 1 minute, which displayed on a label. That is, i ... A: You can use the Timer class (use the one in javax.swing not java.util). E.g. import ... | |
| Swings and desktop | 5/13/2006 |
| Q: Can u solve my following problem: I have to simulate the desktop environment of windows using Java. ... A: You can do this, the amount of work required depends on how funcational you want it to look. E.g. A ... | |
| manipulate the super class attribute in its sub classes? | 5/12/2006 |
| Q: I have a abstract super class and its two sub classes, the super class have a protected attribute, ... A: You cannot manipulate the access level of fields. You can manipulate the access level of methods so ... | |
| Swings and winamp application opening | 5/12/2006 |
| Q: Can u please tell how to open Winamp, if we click a button in the form developed. Means, i developed ... A: The main problem is determine where winamp is located. If you know (or assume some default location) ... | |
| related to tabbedpane in java | 5/12/2006 |
| Q: how we use the textfields,labels and buttons in the tabbedpane....please explain the coding in java ... A: What you do is create a JPanel for each tab you want. In the JPanel put your JTextFields and JLabels ... | |
| How to hack into runescape? | 5/11/2006 |
| Q: Im wanting to know how to hack into www.runescape.com i dont know how long ago you hacked into it ... A: I don't think anyone has actually hacked into runescape. Bots have been created, exploits have been ... | |
| JVMPI & JNI | 5/10/2006 |
| Q: I'm using the attached piece of code as reference for a class project, but I have never seen the ... A: 1. If there is no access modifier then the method/field/class has package access. Every class in the ... | |
| Images in Game Applets - Pong | 5/8/2006 |
| Q: Harper, I have been working on this Java version of pong for a few weeks now. As far as the game ... A: You could try buffering your image. Keep an Image field around as a buffer, create it using ... | |
| Referencing Files | 5/4/2006 |
| Q: Heyas, Yeah I did wonder if really this was meant to be in the registry or, at least, the ... A: I've been using Eclipse for some time, and the version I am using supports java 1.5 (still a few ... | |
| Referencing Files | 5/2/2006 |
| Q: Hey again, That approach worked perfectly for reading files, but as the preference file stores the ... A: Its rather rare to actually write to a jar file. If the file was online doing this would be simply ... | |
| Batch File in Java | 5/2/2006 |
| Q: Hi i have one java file and i hav to run batch file for running cd command and then java commmand so ... A: Instead of changing the directory and running java you could do: java -classpath ... | |
| seach string in web browser | 4/30/2006 |
| Q: I am trying to make the following program: Program checks the html web page seachs for the specific ... A: What you would do is open a stream to the URL, wrap a Reader around the InputStream, and dump it to ... | |
| Referencing Files | 4/29/2006 |
| Q: Heyas, I've got a program that stores user variables in a file called preferences.ini at the root ... A: If you jar, its rather difficult to actually write to it, so if your fine in just reading you can: ... | |
| displaying the content of HTML File | 4/23/2006 |
| Q: I am doing my project in Java Swing.I am having a program to get the input from the user as URL in a ... A: You are probably getting an EOFException because there is an empty or malformed file at C:\Documents ... | |
| integration of modules | 4/22/2006 |
| Q: sir, I have sent the following question before some day and I tried according to your answer.But ... A: So the labels in the popup menu of f1, f2, and f3 are not showing when you call their main method, ... | |
| displaying a web page | 4/22/2006 |
| Q: We are students of an engineering college.We are doing our project in Java Swing.Our problem is need ... A: You may need to configure your firewall to allow java access to the internet. The new version of ... | |
| Viewable windows | 4/21/2006 |
| Q: Heyas, I've written a card game with a GUI, and just implemented options to change the resolution ... A: Either: A: The frame needs to be invalidated, use frame.invalidate(). B: All component changes ... | |
| Building a website | 4/20/2006 |
| Q: Even i could not complete them well, but i am fine with that assignment. I really appreciate that. ... A: I do not recall what tools you are using for your web site. If you mean what parts of a site should ... | |
| Java swing | 4/18/2006 |
| Q: I am a student at a high school in Belgium, I have to make a multiplayer-over-network game on ... A: There are several drawImage methods. The one you probably want to use is: drawImage(Image image,int ... | |
| Java swing | 4/16/2006 |
| Q: I am a student at a high school in Belgium, I have to make a multiplayer-over-network game on ... A: 1. The getImage() method gives back an Image not a BufferedImage. 2. Directly refering a file on ... | |
| sir, I have three java files... | 4/14/2006 |
| Q: sir, I have three java files f1.java,f2.java and f3.java.one for detecting remote os.secnd one for ... A: If f1.java has a main method you can call it from f4. E.g. public void actionPerformed(ActionEvent ... | |
| Array | 4/10/2006 |
| Q: Is it possible to create an array which will store any type of data, such as integer, float, or ... A: You can create an array of Object which will store any non-primative. For primatives you can use ... | |
| Java | 4/9/2006 |
| Q: When I go into a card site,it says my computer doesn't support java. How do I download java so I ... A: You can download the newest version of Java from java.sun.com. When you run a java applet from the ... | |
| Thumb Impression and Photo Scan using java | 4/4/2006 |
| Q: In my project i need to take thumb impression and photo scan using java application , i came to know ... A: This depends on what format the thumb impressions and photo scans are using. You can use JNI to ... | |
| Integrating two java applications | 4/4/2006 |
| Q: I was wondering... what would be an efficient way of integrating two Java applications written by ... A: > I understand that RunProcess has an exec() method that allows a user to do this. But what are the ... | |
| Pannels of images, or what? Thanks | 3/29/2006 |
| Q: Good morning/Afternoon/Evening name is Tim Dunning. I'm trying to create a message board using java ... A: I would swap images. Spefically I would create a JLabel containing that has no text and an icon of ... | |
| Pannels of images, or what? Thanks | 3/28/2006 |
| Q: Good morning/Afternoon/Evening name is Tim Dunning. I'm trying to create a message board using java ... A: This somewhat depends on if you are displaying each panel in its own frame or in one big frame (or ... | |
| How to arrange the Layout? | 3/28/2006 |
| Q: I try to learn from the link that you provided me, but i still cannot get my layout done as what i ... A: If you have to you can simply not use a layout and put the components in the location with the size ... | |
| Converting pixels into cm | 3/27/2006 |
| Q: The code below is in regards to pixels, how would I convert the pixels into Centimetres? ... A: assuming you are using the jgoodies API... you can convert Centimeters into pixels, so if you want ... | |
| How to arrange the Layout? | 3/26/2006 |
| Q: I am a Java beginner and now i need to create a ChattingRoom application for my assignment. I try to ... A: I would look at the tutorial for layout managers: ... | |
| Rectangles and Ovals | 3/25/2006 |
| Q: i have created this code, i would like random amounts of rectangles to appear between 0 and 3 and ... A: well you are drawing several rectangles in the corner in your loop. You probably want them in random ... | |
| I would like a random shape size to appear | 3/25/2006 |
| Q: I would like random number of rectangles to appear between 0-2 and also random size each time of ... A: You can use the Random class for that... e.g. import java.util.Random; public class RandNumbers { ... | |
| Listening For Window Size in Java | 3/23/2006 |
| Q: I am using Java 4 to create a drawing. My drawing has to be abble to resize if the window is ... A: You don't want a WindowListener, rather you want a ComponentListener. You can use getWith and ... | |
| Backtracking | 3/22/2006 |
| Q: Most humbly, it si requested that i am developing an URDU(national language of Pakistan) Parser, for ... A: I'm not entirly sure what you want to do, but you might want to see if using javacc will do you any ... | |
| UDP based file transfer | 3/20/2006 |
| Q: I am doing my academic project in this area. I want to transfer all filetypes of files using udp.I ... A: Well to read and write files you can use a FileInputStream and a FileOutputStream. But for transfer ... | |
| Disable Tristate check box node in a Jtree | 3/17/2006 |
| Q: I am using Tristae check boxes as nodes of a JTree. I wantto disable a few nodes. But it is not ... A: A shared component is generally used to render each item in the JTree. If you disable one node, you ... | |
| java.io | 3/15/2006 |
| Q: Basically, i have a script to copy a complete file and produce an output file containing an exact ... A: Well you just need to change your while loop a bit... CopyFile: while ((c = in.read()) != -1) { ... | |
| on multiple jvm's | 3/14/2006 |
| Q: what happens if we install multiple JVM's in a single system A: You have multiple JVM's on your system then. What happends depends on what you are doing. Generally ... | |
| Cpu | 3/13/2006 |
| Q: sir sorry for further bothering u..actually am not really clear with the java code for cpu ... A: If you download the commandline process viewer from ... | |
| GUI Pauses | 3/11/2006 |
| Q: Heyas, I'm making a graphical card game where one human player plays against 3 computer opponents. ... A: You do want to create another thread for this. But you may need to repaint after the thread is ... | |
| Adding a program to batch file | 3/11/2006 |
| Q: Another question to ask. I tried adding another program into the folder of a program that executes ... A: Its only copying the Service.class and the Server_Stub.class to the client directory. I would ... | |
| Cpu | 3/11/2006 |
| Q: Sir, I used the following code (Obtained from all experts.com) to calculate CPU Utilization for a ... A: This above code will only guess at the CPU cycles, in most cases it will not work. If you can find a ... | |
| Java | 3/8/2006 |
| Q: Is there any way to make a java program runs whenever the computer is turned on? Thanks A: This very much depends on the operating system of the computer. You could put the java program in ... | |
| JAVA | 3/8/2006 |
| Q: i created a simple window panele and added some buttons and a textbox. my question is how can i ... A: I would recomend the replaceSelection(String) method, which performs the same function as if the ... | |
| java.awt | 3/7/2006 |
| Q: I am trying to do a program, that when the mouse points to the task bar(depending on its color) to ... A: your problem is your import statements. none of the package names are upper case. Color is a class ... | |
| java swing | 3/4/2006 |
| Q: i am doing project on java awing. i have to display an image on the JFrame object. on the image, the ... A: Example: /* * JZoom.java * * Created on March 5, 2006, 2:06 PM */ import javax.swing.*; import ... | |
| Prime numbers | 3/1/2006 |
| Q: I have been trying to find the suitable source code to find the prime numbers, I was able to get ... A: Your program does not test if a number is prime, rather it tests to see if the number is a multiple ... | |
| barcode ttf install | 2/23/2006 |
| Q: Running AIX 5.2. Have Java14 installed. We have a java app that needs to print out barcode. We ... A: I would recomend just reading in the font at runtime, you can use the Font.createFont method for ... | |
| write thread on the button | 2/22/2006 |
| Q: i have a button, already made in swing can u tell me how to write the thread on that button. A: I assume you mean execute a thread when the button is pressed. For the button you either have an ... | |
| Java/Email Conflict? | 2/19/2006 |
| Q: I have a problem with my Dell Inspiron 600m Laptop finding a conflict with Java. For some odd ... A: Chances are you had an older version of java installed on the system, when you installed the newer ... | |
| dynamic array/ array list of arraylists | 2/10/2006 |
| Q: well i'm new to java. i need to read stuff from a file and store in some data structure. say i have ... A: If your using java 1.5 you can use generics... e.g. ArrayList<ArrayList<String>> myList = new ... | |
| Why isn't this generic class declaration working? | 2/7/2006 |
| Q: I have, essentially, the following class declarations: class Foo { } class Bar<F extends Foo> { } ... A: F is not defined, all new types have to appear in the template list. A "correct" way of doing this ... | |
| java | 2/6/2006 |
| Q: my question is what circumstances would you use abstract classes and interface plz answer me with ... A: You use abstract methods and interfaces when you want to declare a functionality without actually ... | |
| Servlet Code - JSP form submit | 1/26/2006 |
| Q: Need Help: Posting data to a servlet from a jsp form? hi experts, I'm trying to find logic and ... A: You would need a Map (Hashtable or HashMap) with keys of line_x values, and values of Lists ... | |
| Table with expanding row | 1/25/2006 |
| Q: Actually, the display model is a list of Results. This list is displayed in a JTable. Let's ... A: Well you can't really use a JTreeTable anyways since you want one row to expand across multiple ... | |
| Strinbg to IP address | 1/25/2006 |
| Q: I encountered problem with the following statements. CommandParser cp = new ... A: import java.net.*; ... InetAddress address = InetAddress.getByName(client_ip); byte[] dot_address = ... | |
| Table with expanding row | 1/24/2006 |
| Q: I want to display search results in a table. The feature I am puzzled about is the ability to show ... A: It sounds like the first column in the table is not connected to the other columns (if that is when ... | |
| JNI | 1/23/2006 |
| Q: I am trying to access a data member of a class I defined in java through JNI, for example: public ... A: Just perform a cast on jobject to jobjectArray. All of the JNI classes that represent java objects ... | |
| java book or website | 1/21/2006 |
| Q: i am goinn to do project in grid computing.we choose java as aprogramming language. i am a beginner ... A: To learn the basics on java, start at java.sun.com, they include a lot of basic tutorials. The area ... | |
| Java not working in one of my brousers | 1/19/2006 |
| Q: I have IE and Netscape that I use. The reason I loaded Netscape is that my IE would not open any ... A: Java does have a plugin for IE. One thing you could try is to go into the java control panel, and ... | |
| string | 1/18/2006 |
| Q: I am attempting to build program in which a program would prompt the user to enter the name of a ... A: If you want to send and recieve text you should use a Writer. e.g. BufferedWriter toRecomtepc = new ... | |
| Comments needed for Code | 1/13/2006 |
| Q: Can you please help me with commenting on this code. I got the code working but need to comment the ... A: /* * We need stdafx.h in order to do user input/output. */ #include "stdafx.h" /* * Entry point for ... | |
| paint image | 1/11/2006 |
| Q: Followup To Question - ------------------------- Hi!Thanks for answering my previous question..I ... A: For whatever component your background is in (e.g. a JDesktopPane) you need to subclass the ... | |
| Java Problem | 1/9/2006 |
| Q: im doing an aplete for a company im working for who are working on an ecological study on newt ... A: This depends on the component you are using. Most text componenets you can use the getText() method ... | |
| Java | 1/7/2006 |
| Q: What is the difference between checked exception and unchecked Exception. ... A: If a checked exception is thrown, or you call a method that declares that a checked exception may be ... | |
| paint image | 1/7/2006 |
| Q: .I wud like to ask about another thing..will u please give me some codes on dumping a database.I'm ... A: There are shell commands to dump and restore a database. If you want to do it just using sql then I ... | |
| Java | 12/25/2005 |
| Q: I run your example and it did work very fine thank you. As you know it only search for the queens ... A: Well instead of replacing x and y with 0 and 0, instead get an x and y from the user (you can ask ... | |
| Java | 12/24/2005 |
| Q: I cam up with a very long solution which is about checking all 8 directions to see if there is ... A: No, what I ment was to use a for loop to check each direction, not each space... e.g. ... | |
| Resource-friendly timer | 12/23/2005 |
| Q: Heyas, I'm considering making a very simple program which will run in the background all the time, ... A: You can use the java.util.Timer to schedule an event to occur at a speficied time (the ... | |
| Java | 12/23/2005 |
| Q: I'm a beginner in java and im building an 8 queen chess puzzle using java text console no graphics. ... A: If you want to disallow the user from putting a queen in a position that would "attack" another ... | |
| java project | 12/22/2005 |
| Q: please i am about to write my final project in java programming before i graduate please can you ... A: What you pick mainly depends on your experence. For example: Build a gui for sorting and keeping ... | |
| component generated events | 12/22/2005 |
| Q: i came across this question in a multiple choice past exam paper whilst revising and am not sure of ... A: 1. This doesn't make any sence at all. 2. This is generally how it is done. 3. This is wrong. 4. ... | |
| java | 12/20/2005 |
| Q: Iv got a second question. In my main menu are three options as you know from the previous1.Display ... A: When printing out your matrix the line that determins what mark to use: String ... | |
| java | 12/18/2005 |
| Q: im a beginner in java and i found ur answer a bit difficult 2 understand could u pleas show me some ... A: Ok here is a solution. It assumes you are using java 1.5. So if you get a compiler error you are ... | |
| java event conflict | 12/18/2005 |
| Q: I have made a simple "scribble paint" program in Java in which you drag your mouse over a Frame to ... A: The problem is you are combining java 1.0 functionality with java 1.2 functionality. the mouseDown ... | |
| java | 12/17/2005 |
| Q: I made a simple choice program that displays arrays using java text console no visuals in blueJ ... A: First: You mean adding a value to an array, not adding an array. In order to add values we first ... | |
| Command | 12/14/2005 |
| Q: It is me again. I found a piece of code from the Internet one of whose functions is enabling the ... A: I would try printing out the exact command that you are using in exec. You could pipe out the output ... | |
| Core Java | 12/11/2005 |
| Q: Can We declare a constructor as protected,public or Private. If no then will it lead to ... A: Yes, you can give any access modifier to a constructor (including none). Also note that constructors ... | |
| How to a private method outside a class | 12/6/2005 |
| Q: actually what my question is i want to test a private method outside that class in JUnit. for ex: i ... A: You would either need to somehow tunnel the method to make it accessible, or use reflection. ... | |
| paint image | 12/4/2005 |
| Q: ------------------------- Hi!Thanks for answering my previous question..Just a follow-up,does the ... A: Yes, if you use JDesktopPane instead of JPanel you will paint the background of the desktop pane. ... | |
| paint image | 11/30/2005 |
| Q: ------------------------- Hi! Please give me some sample code of yours on how to paint a background ... A: If you want a custom background for a JFrame just set a JPanel with the custom background as the ... | |
| java gui | 11/29/2005 |
| Q: currently the user plays the game in a terminal window and game events are printed as ... A: Well you probably want to use a BoarderLayout for the Frame. Putting the Text component you want to ... | |
| Java | 11/28/2005 |
| Q: There are couple of questions which i would like to ask. 1. I downloaded a piece of code from the ... A: 1. since the lock is released just after it is created, you wouldn't see anything happen. 2. It ... | |
| Java | 11/18/2005 |
| Q: I encountered some problems with some of the sample codes that i downloaded from the Internet and ... A: 1. Well from the error message, when you run the application it doesn't have access to the desktop. ... | |
| counting character in a file | 11/11/2005 |
| Q: I need some help in counting the occurences of characters in a file. I got the code to open the file ... A: you can keep them in an int[], where the index into the array is the count of that letter. E.g. ... | |
| Java Script Pop | 11/9/2005 |
| Q: I understand they are different - I have have checked my browser settings and they appear correct. ... A: Its hard to say what the problem is, but as I mentioned, java and javascript and different things. ... | |
| closing/ending JFrame applications | 10/27/2005 |
| Q: my question is simple and straightforward i have seen two methods for closing/ending JFrames, those ... A: For the most part if you use dispose, the application may continue to run if there is other Frames ... | |
| Jar Files | 10/27/2005 |
| Q: Mr. Harper, I am a high school student learning Java, and I have a good feel for object-oriented ... A: First by "opening" the archive you are actually asking java to launch the application in side. If ... | |
| items | 10/25/2005 |
| Q: i want rooms to contain an item. i currently have a class called item looks like this. import ... A: It seems rooms have items, you probably just need to add something like getItemString method to ... | |
| Developer's Productivity | 10/25/2005 |
| Q: I am a dotnet developer, I was working in a good company but the only problem there was the ... A: This is something that comes with experence. If the job is expecting you to complete a task that ... | |
| Compile java program from the console | 10/25/2005 |
| Q: I have done just what you said but now when i run command prompt and type the command ipconfig to ... A: the path enviromental variable is mearly a semicolon seprated list of paths to look for applications ... | |
| splash screen | 10/20/2005 |
| Q: How do I use a layout manager and gridbag layout to add a splash screen to a program, that displays ... A: I don't see what a layout manager has to do with a splash screen. To show a splash screen just ... | |
| java swing | 10/19/2005 |
| Q: am a java swing developer and one of many maniacs in java all around the world am crazy about java ... A: From my experence when dealing with a small database both java and .NET are about equal in ... | |
| Since ++ has higher precedence than =, why does the following code print 1 ? | 10/18/2005 |
| Q: Since ++ has higher precedence than =, why does the following code print 1 ? ---------------------- ... A: The reason is that you are using the post increment as opposed to the pre increment. The post ... | |
| Compile java program from the console | 10/17/2005 |
| Q: I am using Window Xp. There is a java program that needs to be compiled and run from the console but ... A: Assuming that you have installed the SDK, you would: right-click on My Computer and select ... | |
| FIFO | 10/11/2005 |
| Q: I am writing a program that enforces the FIFO rule. I am planning to use the Queue class with an ... A: Queue (java.util.Queue) is an interface that defines simple operations for a Queue. If you want to ... | |
| Jtree | 10/8/2005 |
| Q: I have Three questions 1. as alaways, an applet shows Applet droped down menu on top left corner to ... A: 1. I do not know what you are talking about 2. Not very easily, but messing with the graphics can ... | |
| Transfering an ActionListener variable's values from a Panel to a class and back again | 10/8/2005 |
| Q: I am currently working on a project which requires me to translate text submitted by a user via a ... A: Well assuming that the Frame class has access to the translator and the JPanel (which would have a ... | |
| random from a set of character | 10/6/2005 |
| Q: Is there another way to do this without using the array? ThanksHello, I am just wondering how you ... A: Well you could use a String (which is a char[] underneath) e.g. String chars = "+-/*"; int r = ... | |
| random from a set of character | 10/5/2005 |
| Q: I am just wondering how you would generate a random character from a set of characters. For example, ... A: First you would need a random number generator: import java.util.Random; ... Random random = new ... | |
| jframes and show()/setvisible(true) methods | 9/27/2005 |
| Q: my question is simple, but i was unable to find an answer in my java books what is the difference ... A: the setVisible method replaces the hide and show methods. The old method names are still there so ... | |
| DateTime Convertion | 9/27/2005 |
| Q: Good day. From the following is my question, please kindly take a look to help. String ... A: Most of this can be performed in the DateFormat class and the Date class. See the parse and format ... | |
| Java Palindrome Program | 9/26/2005 |
| Q: I have a Palindrome program, but it won't compile without errors, can you look at the program? // ... A: The method looks fine... Perhaps you just need to wrap it in a class to have it function correctly. ... | |
| gui design | 9/24/2005 |
| Q: iam just wondering about a layout, iam using grid layout and border layout to show my GUI, but when ... A: You can set the maximum size of the components using the setMaximumSize method, but I am not sure ... | |
| toString() | 9/23/2005 |
| Q: I am writing a program, displaying this matrix 1 2 3 4 | 10 1 2 3 4 | 10 1 2 3 4 | 10 - - - - - - 3 ... A: The code in your toString method will simply return the output instead of using System.out.println, ... | |
| Java Beginner Program | 9/22/2005 |
| Q: i am a beginner at java and I am taking an AP computer course this year. My teacher gave us an ... A: This is too general for me tog correctly answer. The program requirments are too vague, also I do ... | |
| jtogglebutton and actions | 9/21/2005 |
| Q: I have an action assigned to a jtogglebutton, but also to an inputmap key binding. The problem is ... A: The problem is that the action reacts to the selection or deselection of the toggle button, it does ... | |
| Add fraction | 9/20/2005 |
| Q: I am new to Java 2 and I wonder if you can help me out or point me to a tutorial on any web sites ... A: Well you would do it the same way you would in math: public Fraction add(Fractaion f) { int gcd ... | |
| left alignment grid layout | 9/19/2005 |
| Q: .. Just to followup - I'm not using the gridbag layout, just the grid layout, which is where I'm ... A: you can use: label.setHorizontalTextPosition(SwingConstants.LEFT) to tell the label to show its text ... | |
| java question | 9/16/2005 |
| Q: i got so many compile errors. the code is not working. will you please remove the errors. regardsi ... A: I meant this to be an example, not somthing that was fully functional. Also there are not very many ... | |
| BorderLayout | 9/15/2005 |
| Q: i have a problem that i haven't found a solution yet. It's a part of my project i've been doing in, ... A: The border layout does exactly what is says it does, don't change that. Instead you can add a JPanel ... | |
| concatenation in Textfield | 9/15/2005 |
| Q: I have designed a scientific calculator in java with one text field. When i enter 2nd digit in the ... A: This is probably a design of the calculator. You cannot for instance just set the text. Since you ... | |
| Random number | 9/14/2005 |
| Q: Now i am not sure I understand "Random random = new Random(357);" Could you elaborate on that. When ... A: If you just want a "random" number then just use the no argument constructor. Using new Random(357) ... | |
| Random number | 9/14/2005 |
| Q: I am new to Java and what I try to accomplish is to have my program create a random number between 1 ... A: The first place I would look is the java API: http://java.sun.com/j2se/1.5.0/docs/api/index.html Oh ... | |
| java | 9/10/2005 |
| Q: I am so stumped! I am a student and we were given this assignment to finish. it is a program that ... A: You need a for loop over the word, getting each character and checking if it is a vowl. When you ... | |
| java programming | 9/10/2005 |
| Q: I am learning java programming and I have been stuck on this program for days! Could you please tell ... A: Your regDate in SmallBoat class is never initilized, if you want to have the regDate be the time ... | |
| java and java swing | 9/9/2005 |
| Q: if i create a page with password and login and Ok Button. how can i go to next page if i click Ok ... A: I have given you code, you just need to assemble it. Also "next page" does not mean anything in ... | |
| Java Swings | 9/8/2005 |
| Q: ------------------------- Question - Hi harper, In swings if i click a button called submit ... A: This depends on wether you have the pages in a JPanel or a JFrame. If you have them in a JPanel, ... | |
| Java and Sound Editing | 9/7/2005 |
| Q: I want to make a program which take humann voice or any other sound as input and changes its ... A: I haven't delt with java sound much. I know that you can record any play back sound on a mic, I ... | |
| GUI wrappers | 9/6/2005 |
| Q: I was wondering if you had any resources or any tips on how to design and create gui wrappers for ... A: I'm not sure what you mean by "wrappers for unix functions". Do you mean creating buttons that have ... | |
| Java Swings | 9/3/2005 |
| Q: In swings if i click a button called submit then it should take me to next page. How do i do this ... A: I have no idea what it means to "take you to the next page" but if you have a button you can attach ... | |
| record the time | 9/2/2005 |
| Q: I am trying to write a program where I can time how long I type the sentence. For example, if I type ... A: The simplest way of doing this is to compare the time from when they started to when they ended. You ... | |
| java (arrays) | 9/2/2005 |
| Q: i have a computer science problem that i'm not being able to solve. i have a test and i'm doing ... A: If this was not a test, then I would just use the sort method in Arrays: int[] array = ...; ... | |
| problems with desktoppane and internal frames | 8/31/2005 |
| Q: I have 6 classes which are different GUI windows. Now what Iwant to do is create a desktop and add ... A: For the most part you can treat a JInternalPane as if it were a Window (or Frame or Dialog). For ... | |
| Hacking | 8/27/2005 |
| Q: Thats is the exact game i want to hack! Could you tell me how? And when you hacked it what did you ... A: The first thing you have to relise is the only hacking that really can be done is client hacking. ... | |
| Web Application Development | 8/11/2005 |
| Q: My question is: I have a web site and I would like to add a link to it, so by pressing on it, a ... A: You could write an active x web application which should be easy to port from a standalone c++ ... | |
| java swing | 8/9/2005 |
| Q: how to insert values of a text box in a database? A: Well first you want to get the text e.g. String text = textBox.getText(); String text2 = ...; Then ... | |
| cursor | 8/9/2005 |
| Q: In Some portion of my java applet i want cursor to be invisible and disable. How Is it possible in ... A: Best shown by example: import java.awt.image.*; import javax.swing.*; import java.awt.*; public ... | |
| copy java data to C structure | 8/2/2005 |
| Q: i m facing a problem that i have to copy java structure to C structure and C structure back to Java. ... A: Well lets first look at possible incompadibilities: 1. char[] in C is ASCII while java's String is ... | |
| swing and other java stuff | 8/1/2005 |
| Q: i have the following questions i´ve been trying to answer on my own, but was unable to do so. these ... A: 1. The code for creating your applet is roughly: public void run() { YourApplet applet = new ... | |
| Java Link | 7/29/2005 |
| Q: I would like to create a button in my java program, such that a pdf-document will open in acrobat ... A: Runtime.getRuntime().exec("cmd start /c "+file); This is the simplest solution. It also will only ... | |
| Regarding a pure java application | 7/28/2005 |
| Q: I have a java application. My current question is in particular about two different classes. One is ... A: Compare what you have to JFileChooser. Since that is using a model dialog the setVisible(true) ... | |
| Chat system in java and php | 7/26/2005 |
| Q: . I am doing my last year in Bsc(Hons)Software Engineering. For my final year project, i'm ... A: Since your using php I assume you will be using a server that uses PHP, and the client will be java. ... | |
| Executing with java vs javaw | 7/25/2005 |
| Q: Platform: j2sdk1.4.2_04 on Wimdows XP Pro Spk2 I have a java desktop application using JTabbedPane ... A: I can't really say what the issue is. Is might be related to the command window being visible or ... | |
| Roman Letters to Numerical Value | 7/23/2005 |
| Q: I have a project to do. I am not asking you to give me the whole answer. I want some tips and hints ... A: Java is used in a wide range of areas. Many jobs require experence in J2EE or J2ME. There are also ... | |
| Related to Java main arguments | 7/21/2005 |
| Q: I was developing a gui for my java application, so that user can enter the input(arguments) in the ... A: Im not entirly sure what you are trying to do. Does the program run without a gui, on say the ... | |
| plz explain oops concepts... | 7/20/2005 |
| Q: plz explain oops concepts in detail.are they not in c? A: c can have oop, but it is not easy to do (c++ has oop). The fundemential idea o oop is that you ... | |
| Reverse number | 7/19/2005 |
| Q: i'm kinda new in Java. Im supposed to write a program that will reverse a given number using modulo. ... A: You will need a while loop. when you % a number by 10 you get the last digit. E.g. int a = 1234 int ... | |
| how is use userdefined package | 7/14/2005 |
| Q: how to use userdefined package in a pregram A: If you mean how do you declare packages, just use the package keyword e.g.: package mylib.mypackage; ... | |
| Rotating Numbers | 7/10/2005 |
| Q: I'm trying to rotate the inputted word.. there seems to be an error that i don't really understand. ... A: Your program seem to be written not to expect a space between the word and the number. What happens ... | |
| java reverse prog | 7/7/2005 |
| Q: i have to do a programming in java that will reverse a given number, for eg. 1 2 3 will become 3 2 1 ... A: well if you mod 10 a number you get its last digit. If you divide a number by 10 you cut off the ... | |
| adjacent repeating letters | 7/3/2005 |
| Q: Some words have adjacent repeating letters. For example, the word “tomorrow” has a double ‘r'. In ... A: Well it sounds fairly simple, just iterate though the characters, keep the last character stored, ... | |
| call toanotherprogram | 6/27/2005 |
| Q: I made 4 programs in java(p1.java p2.java p.java and p4.java) the first ones shows the option to ... A: You generally don't call one program from another (although you can) instead you generally call a ... | |
| hello | 6/21/2005 |
| Q: So maybe you are suggesting that C++ would be a better language to work with? What I am doing is I ... A: Its not really the language, rather its whatever API you find that will handle the video. If you ... | |
| hello | 6/19/2005 |
| Q: I want to devise an application in Java that is feed video from my camera through the firewire port ... A: Java cannot do it by its self, there might exist some library that would assist you in this. You ... | |
| Java | 6/19/2005 |
| Q: I think Java is installed on my pc but do I really need it ? What can it do for me ? I'm 76 and get ... A: Java is not really a program, rather it is a tool required for some applications to run, espically ... | |
| Java Question - How to | 6/9/2005 |
| Q: How would I write this program with a for loop? public class PenniesForPay { public static void ... A: Since your program calls System.exit in the while loop, I do not understand what you are doing. ... | |
| Delete of a record in a pgm j2se | 6/7/2005 |
| Q: I made a programa in Java. The query, insert and Update work ok. The delete opcion have the ... A: Your delete needs a from e.g.: Delete From Empleados where IdEmpleado=3 Also you should not use ... | |
| entering a given .class file!! | 6/2/2005 |
| Q: ! i would like to ask a simple (probably) question, but i really don't know what to do with that! i ... A: You must make sure that the .class file is in your classpath. E.g. If you run javac on the ... | |
| chars and strings | 6/1/2005 |
| Q: i have the following question that seems very simple but actually i was unable to answer ok, a ... A: String var = ""+ch1+ch2; This works since this statements resolves to: String var = (""+ch1)+ch2; ... | |
| Changing the working directory in Java? | 6/1/2005 |
| Q: I know that the following changes the the "user.dir" property of the Java program, but through my ... A: You don't, changing user.dir is not supported in the java platform. You should consider writing your ... | |
| ; expected. Why?? | 5/29/2005 |
| Q: i'm writing a program in java, everything is correct but the compiler hits wrong at the following ... A: You should declare totalarea up front instead of redeclaring it in the for loop. Also (assuming ... | |
| cloning in java | 5/25/2005 |
| Q: what is cloning in java & types of cloning in java. A: cloning is the copying of an object to create an identical object. The method clone() in Object ... | |
| Calling outside programs and commands in Java? | 5/22/2005 |
| Q: In Java how do I call programs/processes (.exe,.bat,.pl, etc.) that are located elsewhere on the ... A: To execute external programs you would use: Process someAppProcess; //Handle to the process, you can ... | |
| I want to learn JAVA in a month | 5/22/2005 |
| Q: How are u? I am working in a QA(testing)environment. I want to shift my career to Development ... A: 30 days is somewhat hard to learn java in unless you are already quite versed in a language like ... | |
| String vars and input classes | 5/21/2005 |
| Q: i have two questions for you: when i write some code like the following: string stringVar; ... A: Question 1: "hello" doesn't go anywhere. stringVar is mearly a reference to "hello". If there are ... | |
| exception handling | 5/19/2005 |
| Q: Here's the basic structure of my program import stuff; ... A: 1st do not have file operations in your paint method, you do not want to reparse the file every time ... | |
| java | 5/19/2005 |
| Q: why java does not support multilple inheritence? what is c.v.s? A: see an answer about multiple inheritence: ... | |
| displaying letters | 5/17/2005 |
| Q: im currently making a game of hangman whilst learning java my current problem is that if i have a ... A: It does not appear you are actually changing display. Strings cannot be modified, calling ... | |
| hashcode() !!!!!!!!! | 5/17/2005 |
| Q: I dont know how to implement hashcode, and i need it urgently. can u please tell me the code for it ... A: Just borrow the hashcodes from addrBookName and emaList. E.g. public int hashcode() { return ... | |
| applet keep loading but not run | 5/16/2005 |
| Q: I have created an applet which is run by number of .class files which i have zipped and inclusing ... A: There are a couple of options you can use. 1st you can use the appletviewer to run the applet ... | |
| Query takes Logger time to Execute | 5/15/2005 |
| Q: i am doing the development in the J2ee arch.(ejb and struts frame work). will it work by doing like ... A: Since I only have experence with J2SE, I don't think I can help you all that much. But I think ... | |
| java code helppppppppp | 5/13/2005 |
| Q: How are u Plz help me I want to ask about java code on how to get the value from multiple choice ... A: Im not entirly sure what you are stuck on. If you are using radio buttons then you must be using ... | |
| Constructor and destructor | 5/13/2005 |
| Q: Does Java has destructor? If yes, how do I code them in my program? Thanks in advance. Good day... ... A: Yes, the finalize() method is called before the object is to gced. Note that the invocation of ... | |
| Query takes Logger time to Execute | 5/10/2005 |
| Q: I have a query which takes a logger time to execute( In EJB gets timeout). Query is almost tunned . ... A: By background task, you probably mean Thread. E.g. if you have a JButton that you are excuting a ... | |
| random disguise | 5/7/2005 |
| Q: im currently making a game of hangman and i would like to be able to print out a random word from my ... A: you could try using the random class: import java.util.Random; ... Random random = new Random(); ... | |
| Serialization | 5/3/2005 |
| Q: I want to know what is Serialization.What is the meaning of the serialized state.What is the meaning ... A: Serialization is the process of transforming an object to binary data that can be stored on say a ... | |
| wordlist hangman | 4/22/2005 |
| Q: im trying to make my word list for hangman using an array. I want to be able to add more words to ... A: First you should put your words into a file. If you format your file if return delmited you can use ... | |
| Data files outside of jar files | 4/21/2005 |
| Q: I am making a spaceshooter game in java. This game has a highscores list that is saved in a txt ... A: First you cannot use getResource to get a writable file. You can only read from these resources. ... | |
| compile .java code in Unix environment | 4/20/2005 |
| Q: I've taken over a Java project but don't know the basics of compiling .java code into .class ... A: javac will use the newer of .java or .class files when compiling. If the code depends on any ... | |
| objects and equality | 4/18/2005 |
| Q: my question is simple and straightforward: how do you compare objects for equality? to make my ... A: Labels are Components, they are only equal to themselves. If you want to see if they have the same ... | |
| java | 4/17/2005 |
| Q: I would like to ask about a Java homework assignment I can't solve. : Develop a Java application ... A: Well this depends on what you are having trouble on. 1st if its reading in the data, you can use a ... | |
| Reading and Writing Serializable objects | 4/14/2005 |
| Q: I have a file called "messageFile.dat". This is a binary file of objects, It was written using ... A: For the most part you read them back in the same way you wrote them: ObjectInputStream inputStream ... | |
| Java question | 4/14/2005 |
| Q: i have a question about java,please hel with this; These are the tasks • To multiply two positive ... A: Aside from doing multiple subtractions, additions, shift operators (i.e. emulating what is already ... | |
| Priority Queue | 4/13/2005 |
| Q: I want to create a queue. Elements are added to the queue in order of priority (High priority ... A: I am not entirly sure what you want. Elements are added into a data structure in any order. The ... | |
| pdf & web data manip and extraction | 4/11/2005 |
| Q: I am a novice and would appreciate any path you light that may assist in future programming tasks I ... A: 1. I have tried various java APIs for pdf documents (the free ones). I have found that for any ... | |
| Internet | 4/11/2005 |
| Q: Is it possible to dial modem or connect to internet from a java application? If possible please tell ... A: Java has many operations once connected to the internet (or intranet). There might be a library that ... | |
| Java programming | 4/11/2005 |
| Q: I am working on building a Java program for a database.That holds names, address, city , etc I have ... A: "where a window will open and not to have to use the DOS prompt" Use javaw to startup an application ... | |
| gui/swing | 4/9/2005 |
| Q: i am a self-taught computer science student i've been studying for about 3 months the java ... A: The Swing library is a gui library that is written entirly in java using an object oriented model. ... | |
| toString(int i) method of converting an int to a string | 4/8/2005 |
| Q: First off thanks for answering my question before, had figured out the toString method...But this ... A: You should probably make a class to store an integer and a String. Then just have an array of that ... | |
| Java Technology Architecture | 4/8/2005 |
| Q: I would like to know what are the Background methods happening in JVM when a Java Program works from ... A: This depends on what your program is doing. If you are using the gui then there will be an event ... | |
| Overwriting/Deletion in a text file | 4/6/2005 |
| Q: Heyas, I'm making a project for a PDA using Java (a mix of Java versions not exceding 1.3). I ... A: I don't really have experence with J2ME (if thats what your using). But I know in J2SE you can use ... | |
| Probably trivial for you but... | 4/6/2005 |
| Q: Sir, Below is a copy / paste from part of my program. A class contains the following methods to use ... A: Im not entirly sure what you are asking, but it does seem that you are not converting bytes to ... | |
| Hash Tables | 4/1/2005 |
| Q: Hey again, I think that's the right answer, but it leaves me with a problem still. I want to ... A: You can store the value as a Vector (or ArrayList). Just pull out the Vector and add a value. As for ... | |
| Hash Tables | 3/31/2005 |
| Q: Heyas, I need to store a bunch of objects i've made in some sort of data structure. My objects ... A: You don't need a two dimensional hashtable. You can put Points into a hashtable, and that will work ... | |
| JTable handling | 3/31/2005 |
| Q: I have a jTable with columns "date_from", "date_to", "description". I would like to protect the ... A: Here is a sample I made that, if the user selects a cell in which the value in the first collumn of ... | |
| drag and drop animation | 3/25/2005 |
| Q: I still can't get it to work, here's the code import java.awt.*; import java.awt.event.*; import ... A: There are various problems with this code, like a missing } for the end of your mouseDragged method. ... | |
| Java I/O and Char variables followup | 3/23/2005 |
| Q: and sorry about not being clear. I actually meant char variables as in the primitive type, e.g. ... A: You can use the read function of the reader. The return value is int though so you will need to cast ... | |
| Java I/O and Char variables | 3/23/2005 |
| Q: I hope this question isn't too simplistic, but I was wondering how you write to a char type using ... A: Im not entirly sure what you mean by "write to a char type". If you mean using different character ... | |
| RTFEditorKit with JEditorPane | 3/22/2005 |
| Q: The RTF that is doigg this is as follows: CARLISLE DOES NOT WARRANT PRODUCTS UTILIZED IN THIS ... A: I guess Im not sure how you are setting your your editor pane. I tried this code: import ... | |
| Character By Character Input In Java 2 | 3/20/2005 |
| Q: First Of All Thankyou For Answerring my previous query about java character by character input. You ... A: I'll assume you know how to do this in c++. first make a private native static function in your ... | |
| drag and drop animation | 3/19/2005 |
| Q: It is much appreciated! I just have a few simple questions in regards to what you sent; 1 - In your ... A: 1. This code is overriding the method processMouseEvent, just add it to your panel's code. 2. What ... | |
| Character By Character Input In Java | 3/17/2005 |
| Q: I want to take input form user character by character (that is user enter a single character and it ... A: Doing this would require JNI. The command prompt is really meant as a simple way of communicating ... | |
| drag and drop animation | 3/16/2005 |
| Q: I was just wondering if you could help me out, I am a bit stuck. I am trying to create an interface ... A: What you want to do is to store and playback the mouseEvents In your DragBallPanel override the ... | |
| JAVA2 RUNTIME | 3/10/2005 |
| Q: I have 3 versions of Java2Runtime in my list of program files.Until recently, I did'nt know they ... A: There is not too many reasons to have multiple java2s. A few might be: 1. If there is a bug that ... | |
| parrallel array's | 3/10/2005 |
| Q: If the colours are sorted it will be from the top red, green then blue. The search method should ... A: well in that case you can use the int value of the rgb to compare colors with. E.g. import ... | |
| parrallel array's | 3/7/2005 |
| Q: well, the search method is so the user can input a search colour. i will call the search from the ... A: If you sort the colors red blue green purple, which one is first, last? How is the user going to ... | |
| error with Java applet | 3/4/2005 |
| Q: WidgetApplet.java:13: WidgetApplet is not abstract and does not override abstract method ... A: The first error is due to not correctly declaring a method that is called itemStateChanged that ... | |
| parrallel array's | 3/4/2005 |
| Q: I am currently trying to write a program that allows me to set up three parrallel array structure in ... A: normally you would not use parallel arrays for this. There are some considerations you have to ... | |
| Input from Scanner. | 3/2/2005 |
| Q: I hope you are doing fine. Actually, i working on a project. I have one difficulty in that. I want ... A: Since there is no universial scanner interface, using any library that allows access to a scanner ... | |
| Control scrolling in text area of Swings | 3/1/2005 |
| Q: How to control scrollbar of a text area using a button?i.e.,I want like when the user clicks on that ... A: First off text areas don't have scroll buttons. Instead they are placed in scroll panes. Then you ... | |
| member variable scope | 2/28/2005 |
| Q: (see end of message below) : Hi, I'm learning Java and have following SIMPLE code snippet. ... A: You would need an instance of class X. There can be more than one. So when you create the button ... | |
| java | 2/27/2005 |
| Q: I am writing a Java program in which the user enter the quantity of each fruit to be purchased. It ... A: int change = ... int dollars = change / 100; change %= 100; int quarters = change / 25; change %= ... | |
| Swing-Frames | 2/25/2005 |
| Q: 1) How to make frames of different shapes, i.e; round,ellipse etc. shaped frames in swing? 2) ... A: 1. Since this is not supported on all platforms you are limited to square frames/windows. If you ... | |
| how to create a random question? | 2/25/2005 |
| Q: i have a problem creating a random question for each user who logins, i mean i'm creating a desktop ... A: To generate a random number you can either: 1. use Math.random() to get a double and use that e.g. ... | |
| Java applets | 2/24/2005 |
| Q: I recently installed a program called Video Ads Blocker, then I uninstalled it on the same day. Now, ... A: This depends on a couple of things. 1st what vendor are you using java from. If you are using/want ... | |
| hashCode method | 2/23/2005 |
| Q: 1) In which cases hashCode method is used? 2) How to get a string back from the hashcode obtained ... A: 1. Hashcode is used in various places, more spefically in classes that rely on hashing objects such ... | |
| package | 2/23/2005 |
| Q: whenever I am trying to make some packages outside the bin directory.I am able to makes them, as I ... A: You are not making any sence: packages in java are part of a class name they allow declaring a ... | |
| "Final Year Project Ideas" | 2/23/2005 |
| Q: i m doing Bachelor of s/w Engg. and i m in final year.I need some final year project ideas using ... A: First java has three main areas of development: J2ME for cellphone applications J2EE for server ... | |
| compiler | 2/23/2005 |
| Q: one is likely to find different compilers made by software houses. One factor of comparison, for ... A: Your question is not clear? You are not making any sence. In any case there really are not that many ... | |
| Software development in java | 2/15/2005 |
| Q: I have one more niggling doubt.You said that java code can be easily reverse engineered,so is it not ... A: Users will still have to put in a good effort to reverse engineered java programs (espically if ... | |
| hi | 2/15/2005 |
| Q: I am not really sure is this the right topic but here goes... I would like to know what is the main ... A: 3rd gen languages interact directly with the machine, you can tell the computer exactly what to do. ... | |
| Software development in java | 2/15/2005 |
| Q: I am a newcomer to Java though I know programming in C.I am interested in learning to develop my own ... A: There is no one language that works for everything, otherwise there would be only one language. ... | |
| java | 2/7/2005 |
| Q: can u explain security problem in applets A: you are being a bit vague... but: In order to ensure that an applet does not take over the system ... | |
| Use of JNDI for getting database conn | 2/4/2005 |
| Q: Harper.. I added this exception clause in the main clause /* public static void main (String args ... A: I prodived you not with a way of getting your code to compile. If you want a less debug way of doing ... | |
| Find the greatest sum with moving cursor | 2/2/2005 |
| Q: This is an interesting programming question that I would like your help to solve. Though the ... A: Lets say you have a MxN grid. Then initilize N states which include the current progress and N new ... | |
| split method not apparent in earlier version of JDK? | 2/1/2005 |
| Q: Ive stumbled upon a little bit of a problem here, im programming a financial package as part of my ... A: Yea its pretty easy using StringTokenizer: StringTokenizer tokenizer = new ... | |
| core java | 1/31/2005 |
| Q: 1)Can U Just Explain the OOPs concept with general example and how to implement tese concept in ... A: 2. The act of either throwing a checked exception or calling a method which declares a checked ... | |
| troubleshooting | 1/30/2005 |
| Q: I'm trying to open Geocities Page Builder. Go to www.geocities.com and page builder link is there. ... A: Well Im not sure exactly where the problem is happening. It could be a popup blocker is preventing ... | |
| Java and cellphones | 1/30/2005 |
| Q: I have a WAP cellphone and it lets me download and play java games. Is it possible for me to write ... A: Sure its possible to do that. Writing games or any complex program takes quite a while to do. For ... | |
| Question | 1/26/2005 |
| Q: Sir, I have a topic, Please give me some potential comments on this topic so anyone can read, easily ... A: My experences with extreme programming is that it can be used to quickly implement a feature since ... | |
| socket programming : chat program | 1/20/2005 |
| Q: How to create the chat program where one server can chat with multiple client at the same time. For ... A: This can be a big undertaking. A few pointers: Classes you want to look at: java.net.ServerSocket ... | |
| Image to Buffered Image | 1/19/2005 |
| Q: I hope you are doing fine. I have a question regarding saving an image. i want to introduce the ... A: 1. Simply draw the image to the buffer. 2. ImageIO class is the only class in the standard api which ... | |
| garbage collector | 1/18/2005 |
| Q: i read in boooks that we can demand garbagecollector by using Runtime.gc() is it true? can we ... A: When control has returned from gc as much garbage has been collected as possible. Although you are ... | |
| I want to know: 1. How is... | 1/17/2005 |
| Q: I want to know: 1. How is the tab control implemented in Java? 2. Is there any provision for ... A: 1. JTabbedPane is a gui class that simulates (does not use!) a "tab control," it does not actually ... | |
| java programming | 1/17/2005 |
| Q: java programme for moving an image alongwith the mouse movement A: Lettts see here. I could pull up a piece of code I have, but it is a bit complex. So I'll just make ... | |
| Why does the following code print nothing? | 1/16/2005 |
| Q: Why does the following code print nothing? --------------------------------- public class Test{ ... A: well it should print out "true", but not "Equal". This is because Strings can only be equal to ... | |
| java / animation | 1/15/2005 |
| Q: my name is Naoufal Kassari and i studie java programation, i want to create many animation with ... A: Animation is fairly easy. Simply parametrize your drawing rotinue, and have a Timer that changes it. ... | |
| How to calculate and show the remaining time left in a JProgressBar | 1/11/2005 |
| Q: i have created a JProgressBar, that shows me the progress of my task in terms of ... A: Well there are various formules you can use. A simple one is: time diff*bytes copied/bytes remaining ... | |
| Classes | 12/17/2004 |
| Q: ! the "wrap" is declared as follows at the bottom of JTextArea.java public class JTextArea extends ... A: You will notice that the only place that wrap is "used" is in: public boolean ... | |
| about security | 12/13/2004 |
| Q: i know some generators can decode the .class file to source code... is there anyway i can prevent? ... A: There are obfusicators that can make it more difficult to decompile class files. Making .class files ... | |
| improving java | 12/10/2004 |
| Q: java doesn't accept writing a function inside another function(nested subprograms).I want to add ... A: Although java does not permit functions in functions, you can put classes in functions and functions ... | |
| Picture show program | 12/3/2004 |
| Q: I have a HW . it is about displaying a picture in a frame and there are 4 buttons to do the ... A: I don't do entire problems (genarlly) espically not homework, since its your class and your ... | |
| .net service to java service | 12/3/2004 |
| Q: We have .net command line service that we use internally. This service can do the following ... A: There are sevelal ways of doing this. using Runtime.exec(...) you can run any appication, get its ... | |
| Classes | 12/3/2004 |
| Q: ! i have overridden the getScrollableTracksViewportWidth() method and made it to return true, which ... A: I just haven't had enough time to determine what the appropiate solution is. Fundimentally what you ... | |
| Classes | 12/1/2004 |
| Q: ! i tried but i don't get the expected results. I tried getting the method from JTextArea, but it ... A: If you override the method and return true, Then word wrap is off. However when you return false, ... | |
| core java | 11/29/2004 |
| Q: Is it possile to write a java program without main,createobjcts ,call the methods? A: Yes it is possible to have a fully functional java program without a main, however it is a hack to ... | |
| Java Calculator | 11/23/2004 |
| Q: Im currently designing a calculator using java. I have designed the GUI and it seems to be ok, ... A: You can use replaceSelection to either insert text where the users cursor is or replace text if it ... | |
| convert from int to byte | 11/22/2004 |
| Q: i am trying to convert an array from integer to byte but i don't know how would you plz help me, ... A: First, createImage accepts either png, gif, or jpeg format, not raw. For using raw rgb data use ... | |
| Classes | 11/21/2004 |
| Q: ! actually, i found out a way to find out the button click of a tab. I used the mouse motion ... A: This is (again) the responsibility of the UI. You could probably override the calculateTabHeight to ... | |
| Jvm & threads | 11/21/2004 |
| Q: sir, 1>how many minimum threads willl run when u launch ur class with main method only. how many ... A: This depends on JVM version, platform and java options. On my system (win xp) running jVM 1.5, I ... | |
| Classes | 11/17/2004 |
| Q: ! what you said i understood. Actually for my text editor, i'm using a vector to hold filenames for ... A: You can add a ContainerListener to recieve events when a component is added or removed, this however ... | |
| Classes | 11/17/2004 |
| Q: ! just now after the previous reply, i understood everything. But now, im facing a new problem. How ... A: Well in my example I record the index of the tab in the CloseButtonAction class. You can ask the ... | |
| Java Question | 11/17/2004 |
| Q: What would the code be to create a class that returns the smallest set of unit-length closed ... A: Let me see if I understand this correctly: If your input is: 1, 1.3, 3.2,3.3, 3.5, 4.5. So you would ... | |
| hi, A simple question,... | 11/16/2004 |
| Q: A simple question, but i m tired of searching. I am talking about the signed jar, what's LEGAL ... A: Signing a jar mearly means that you are asserting that this jar came from you and it is unmodified. ... | |
| Classes | 11/15/2004 |
| Q: ! i tried the following code, but the button is added to the main tab area and not to the tab title. ... A: As I said, whatever you add must implement UIResource. This means you need to extend JButton and ... | |
| Classes | 11/13/2004 |
| Q: ! but in what way does implementing UIResource for the class CloseButton prevents it from creating ... A: 1. The method implementation of addComponent in JTabbedPane goes like this: public void ... | |
| Classes | 11/12/2004 |
| Q: ! the reply you gave is working perfectly. But i need some more clariffication. I understood all the ... A: Insets are the buffer around a component. If you increase the buffer it allows for more white space ... | |
| java | 11/11/2004 |
| Q: "i have developed a console based chat program. there is n client's and one server. server has to ... A: you cannot use goto since java does not support it. You cannot really allow someone type a message ... | |
| java | 11/11/2004 |
| Q: "i have developed a console based chat program. there is n client's and one server. server has to ... A: Its hard to say whats wrong. A few guesses though: 1. make sure you spell quit correctly (it looks ... | |
| Classes | 11/10/2004 |
| Q: ! I have currently extended JTabbedPane class to my own class (NewTabbedPane) which contains methods ... A: Doing this is not easy, but I spent the time and wrote up a simple example of how to have close ... | |
| Classes | 11/9/2004 |
| Q: Or have u noticed netscape browser? They have a small 'X' button at the end of the tab bar. Is it ... A: The netbeans source is there. When you choose to download, just scroll down to "Other distributions, ... | |
| objects(in java) | 11/8/2004 |
| Q: Can an object have more than one type? A: Depending on your defination of type... An object can be referenced as its class or one of the ... | |
| Classes | 11/7/2004 |
| Q: ! i couldn't fully understand what you mean. Could you plz explain in detail?Hi!! actually what im ... A: Every swing component has a ui class that is responsible for rendering it, and deciding how the user ... | |
| Hi Mr. Harper, I want to... | 11/7/2004 |
| Q: Harper, I want to create a program in Java (an applet) that, adds, subtracts, multiplies and ... A: To determine if a fraction is in lowest form, just determine if the gcd if the numerator and ... | |
| object factories | 11/4/2004 |
| Q: I have been trying to understand the idea behind object factories in Java, but I only have access to ... A: A factory is basicly a dispatcher to retrive an object that follows the citeria that is given. The ... | |
| Classes | 11/4/2004 |
| Q: ! i still get the StringIndexOutOfBoundsException. I already told you that im making an editor for ... A: You are either going to have to use a library that already does that. Or you have to override the ... | |
| changing content inside a tag in a HTML file using Java | 11/2/2004 |
| Q: Your answer wouldnt help me, because I dont have any attribute inside the tag. Its just the text ... A: well just use addAttribute, except use the special IMPLIED attribute. E.g. ... | |
| Converting to Gray-Image and display it | 11/1/2004 |
| Q: I am trying to Convert an TYPE_INT_RGB into a gray scale image, by the ... A: Here is a sample that works, although it does not use the ColorConvertOp. My intial guess is that ... | |
| Non-static variable and static context | 10/30/2004 |
| Q: I need to print the database's data on a TextArea of a standalone application . I used ... A: The easiest solution (but not the best) is mearly to declare the area as static. I would first try ... | |
| Classes | 10/29/2004 |
| Q: ! im trying your previous reply. Is there a way to find the Charset of a file through java?Hi!! the ... A: There is no way to "find" a charset, instead you can guess the format given some of the characters. ... | |
| Linked Binary Tree | 10/28/2004 |
| Q: I am trying to figure out a different method to find the height of a linked binary tree other than ... A: Fundementally you can express anything without using recursion. Just use a stack to simulate ... | |
| Classes | 10/28/2004 |
| Q: ! the solution you gave works out. But there is one problem. When i open the "jdkhome.reg" using ... A: The reg file is in unicode. You would use something like: import java.nio.charset.*; BufferedReader ... | |
| Classes | 10/27/2004 |
| Q: ! thanks for being very cool with me. You r absolutely right. Im looking for the path of javac. ... A: This is a horrible hack, but it *should* work on a windows platform. Use Runtime.exec("regedit /e ... | |
| Classes | 10/26/2004 |
| Q: I tried getting the properties dump. But no property is having its value as "C:\J2SDK142" or ... A: Let me make this clear: Without using JNI (on windows only!) there is no way to determine the ... | |
| core java | 10/26/2004 |
| Q: sir my question is 1> whats the difference betwen Reflexion& Introspection. 2>how many maximum ... A: Introspection is a spefic kind of Reflection, in that it only tries to determine information at ... | |
| Classes | 10/25/2004 |
| Q: Actually java is installed at "C:\J2SDK142" and its JRE at "C:\Program ... A: Since there can be many or none jdk installations, there is no clean way to determine the path to ... | |
| Classes | 10/23/2004 |
| Q: ! that was a wonderful answer. It worked perfectly. Actually, im trying to do a small ide for java ... A: The java.home varible should be (unless you change it using setProperty) the directory of the ... | |
| About Enumeratoion | 10/22/2004 |
| Q: how are you I want to know about Enumeration what is that and about hasecode and hashmap ... A: An emumeration simply is a list that you can enumerate though, that is get one value at a time from ... | |
| Error Message from a Serialization Project | 10/22/2004 |
| Q: Artemus, Thank you for your timely response. Actually, I tried different ways either change the ... A: oh right you also need to switch the arguments you are using... Your constructor has String,float ... | |
| Classes | 10/21/2004 |
| Q: ! java is installed in my system and it is working perfectly. But i want to find the installation ... A: Let me get this straight: you want to determine the location of the java install directory from a ... | |
| Set Font in JEditorPane | 10/21/2004 |
| Q: I am able to set font in JTextField but somehow am not able to set font in JEditorPane. I have ... A: Since you are writing a chat program, you probably want to allow different fonts in your program. ... | |
| Classes | 10/19/2004 |
| Q: ! i have the following problems: 1. There is a main class called "note". This class "note" is used ... A: 1. Its not clear what you want to do. If you wish to access stuff outside a package it must be ... | |
| Send image over network | 10/19/2004 |
| Q: I would like to load an image in 1 of a chat clients and the rest of the other clients that is ... A: One possible problem is that the read method of filestream doesn't necessarly read the entire file, ... | |
| java | 10/16/2004 |
| Q: what is the difference between interface and abstruct class, expalin in detail A: An interface is just like an abstract class except: 1. interfaces cannot contain non-static fields ... | |
| building a mail server | 10/13/2004 |
| Q: i am planning to build a small mail server that will collate all the different mails people have ... A: First, before you start you should consider any legal implications this may involve. Creating/using ... | |
| mediatracker | 10/12/2004 |
| Q: sir can u plz tell me what is basically use of mediatracker class in our prgms.i m not getting for ... A: In order to streamline the effectiveness of loading images, most operations which create an image ... | |
| ImageIcon and getPath() | 10/12/2004 |
| Q: i'm am doing a prgram that display's a digital image in it by a JLabel and you can choosing it by a ... A: you should not have to worry about slashes at all. Chances are the image is not valid or is ... | |
| How to determine if an application has bound a socket | 10/7/2004 |
| Q: I need to know if Sun Java System Message Queue is running (in order to start an application that ... A: I really have not used JSM, but if it is a system wide app, there is probably a way to determine if ... | |
| reverse the file contents | 10/6/2004 |
| Q: I want to reverse the contents of a text file and store it in another file.Means the content of ... A: Well first, what do you mean by reverse? It can mean: 1. reverse every character so that the first ... | |
| java applets (circle) | 10/5/2004 |
| Q: I have the following coding using java applets, my aim is to create a circle, which when clicked on, ... A: well in the init method (make one if you don't have one), you create a mouse listener for the app. ... | |
| java swing/gui dialog box | 10/1/2004 |
| Q: Do you know of any way to close a dialog box automatically or have it refresh automatically to keep ... A: Im not entirly sure what you want. Dialog boxes can be closed at anytime by using setVisible(false) ... | |
| Hi, Mr.Harper, Thanks for... | 10/1/2004 |
| Q: Mr.Harper, Thanks for your great help! I tried the first solution by using following command: javaw ... A: 1. Its not common to require a lot of memory to run the VM. I think the default size is 90M 2. If ... | |
| Internatinalization | 9/30/2004 |
| Q: I am doing the multilingual system (in Thai). Technologies used are JAVA and Oracle9i. The question ... A: Its hard to say. How are you getting the information from the user? It might be the interface the ... | |
| java ann dist ributed client/server | 9/25/2004 |
| Q: Please I need to know the difference between java and a distributed client/server A: A distributed client/server acts together to give content to the user. The client is the gateway for ... | |
| Doubts -reg[Applet and Swing] | 9/23/2004 |
| Q: sir i am a final year Computer Engineering Student in South India.i started learning java for past ... A: 1) if you are going to have it on the web use an Applet, otherwise use swing. 2) consider use a ... | |
| array problem | 9/23/2004 |
| Q: i create an array to allow user to enter their 5 favourite numbers.then from the 5 numbers, this ... A: You need to pass in the array of ints to the compare function i.e. public static int compare(int[] ... | |
| about exception while running the program | 9/22/2004 |
| Q: when i compile the program ,it gets compiled.but after running the program it gives me ... A: if you want to run an applet that does not have a main function, you must create an html file for it ... | |
| Swing Layout | 9/20/2004 |
| Q: My JFrame has a BorderLayout. I am placing a JTabbedPane at the North. I want that when the user ... A: well the JTabbedPane is a combination of the tabs and the container that holds each item that the ... | |
| JAR encryption | 9/20/2004 |
| Q: I got an applet. How can I prevent anyone from downloading it & decompiling the class file? Can I ... A: Although you cannot prevent anyone from decompiling or downloading it (the jar has to be downloaded ... | |
| File Choosers | 9/18/2004 |
| Q: i'm making an image-only FileChooser and made the main JFrame that has a Button to display the file ... A: Its hard to determine what is happening... 1st are you puting out debug statements to determine if ... | |
| When I try to run a game at... | 9/18/2004 |
| Q: When I try to run a game at Pogo.com it won't start. I think it has something to do with javascript A: I would check the help section of pogo and see if you meet the system and sofware requirments. Since ... | |
| Interfacing with other apps | 9/14/2004 |
| Q: I want to interface another application thru a java program. Something like - type a character in a ... A: I suggest you get clever, a commandline program which allows you to control winamp, and run that ... | |
| Flash background colour | 9/7/2004 |
| Q: I am trying to get the background on a Java Panel to flash from one colour, to another, and back ... A: My guess is that your doing these operations on the Event Thread, usually happens when you respond ... | |
| query | 9/5/2004 |
| Q: I am going to begin on a project called 'Back up Servers'. The only thinh i know about the project ... A: Once you know more about the project you should look for libraries which fit the needs of the ... | |
| filestream | 8/27/2004 |
| Q: could I get the basic syntax for opening a random access file, appending a one-byte value to it, ... A: import java.io.*; public class AppendByte { public static void Main(String[] args) throws ... | |
| Files' MetaData extraction | 8/27/2004 |
| Q: I am wring a java class to be embeded within a webpage to display a table of files within a folder. ... A: Nope, even if I was just using c++ I wouldn't have a clue on how to expose this information. I know ... | |
| Developing Rule Engine in Java | 8/21/2004 |
| Q: Sir, Me & my friends have decided to develope a small rule engine at our level. We r currently ... A: The only rule based lanuage I've had any experence with is OWL (and DAML). For that I used the jena ... | |
| Client/Server - Distributed Applications | 8/19/2004 |
| Q: I am going to implement a project in a month but don't have the required knowledge for that, that ... A: there are two direct apporaches to this: 1. use Sockets, with these you can send bytes over a stream ... | |
| Interfaces | 8/19/2004 |
| Q: Interfaces have method declarations. My interface has five methods. I want to implement my interface ... A: Here is an example: public interface Interface1 { void method1(); String method2(); int ... | |
| Swing drag and drop | 8/16/2004 |
| Q: Environment : JDK : 1.4.2 Requirement: Would like drag/drop between apps as copy by default without ... A: Example: import javax.swing.*; import javax.swing.event.*; import java.awt.datatransfer.*; import ... | |
| problem with painting the jcombobox value | 8/11/2004 |
| Q: for your info, i've already added the repaint() but it didnt help except making things worst. if i ... A: OK I took a closer look at your code (was a bit busy) First: Don't use getGraphics, unless your ... | |
| problem with painting the jcombobox value | 8/7/2004 |
| Q: i'm using a 'for loop' to paint the chosen values of the jcombobox upon pressing a jbutton. the idea ... A: The only thing I can think of is to call the super paint method first before you start painting. ... | |
| How to use Runtime.exec to invoke cmd.exe in windows? | 8/5/2004 |
| Q: its quite right but its not complete, sorry if i'm saying that, how my Runtime.exec or javac and ... A: First I will assume that you have a default directory set up to use. This also assumes that you want ... | |
| Convertion of C++ program in to Java | 8/4/2004 |
| Q: Sir, In our Java WebBased project some functionality is written in C++ program as a supporting ... A: There isn't tool I'm aware of that does this. And even if there were it wouldn't be perfect, aside ... | |
| How to use Runtime.exec to invoke cmd.exe in windows? | 8/4/2004 |
| Q: i have no idea of how to invoke or calling the cmd.exe in my application with javac and ... A: I think what your asking is how to get the output from javac.exe and java.exe. When you use ... | |
| Interfacing java, Ms Access and Ms Excel | 8/3/2004 |
| Q: How do I interface java 2.1, ms access and ms excel. A: What do you mean by interface? Run java code as a macro in ms access and ms excel or read and modify ... | |
| java table cell won't redraw automaticall | 7/31/2004 |
| Q: I wrote a java program for stock market trading. The stock quotes are fed through internet from my ... A: Since I do not have all the code: SampleFrame.java, my guess is that your not changing that data ... | |
| Could you please let me know what event is associated with JMenuItem accelerator key in swing? | 7/30/2004 |
| Q: Could you please let me know what event is associated with JMenuItem accelerator key in swing? The ... A: Well either its: 1: a focus problem, if something is grabbing the keyevent before the menu can react ... | |
| help please with handler(chain of responsibility) | 7/28/2004 |
| Q: temperature < 0 degress, temperature > 40 degress it will store in either a Bin, Shelf or aisle. i ... A: Well I see two problems with this code: 1. you are calling super.CheckCriteria, but this class only ... | |
| Changing an Image | 7/26/2004 |
| Q: I'm sorry, I realized that after I had already sent it. Image Icon = ... A: You cannot change the image once you make it. If you are drawing this image or if it is part of an ... | |
| Can you use a JList within a JTable column? | 7/26/2004 |
| Q: I have very limited knowledge of Java Swing and have been assigned the responsibility of updating an ... A: This depends on your current tableModel you are using for the table. If you are just using the ... | |
| Java GUI | 7/23/2004 |
| Q: Sir,Is it possible to provide "Minimize" functionality to a JWindow? A: No, a JWindow does not show up in the Taskbar. You can hide a JWindow, but not minimize it. You can ... | |
| Activating wav file | 7/20/2004 |
| Q: I'm developing a Java 3D application and need it to play some audio (say for example to play a ... A: Here is an example (wav format works): import javax.sound.sampled.*; import java.io.*; public class ... | |
| Question | 7/19/2004 |
| Q: Sir I want to ask some detail about the topic. The topic is, "What in your opinion, is ... A: Native Assembly will always be necessary, as java bytecode and MSIL (Microsoft Intermediate ... | |
| Java Swing Tool bar | 7/14/2004 |
| Q: I can move the toolbar in my application but cant get the current changes made. i want to keep the ... A: I have no good clean solution... but this example (although a bit buggy) shows how to get and set ... | |
| Application using LDAP | 7/11/2004 |
| Q: I am working on LDAP (Lightweight Directory Access Protocol) and have to create an application in ... A: I do have some extra time to help in projects like this. I cannot however guarantee a set amout of ... | |
| deprecated API | 7/11/2004 |
| Q: well thank you for the answer, i solve it already, the problem is in the setting of Data ... A: As the documentation states the reason that getText() in JPasswordField is depracated is that it ... | |
| error in JDBC driver | 7/9/2004 |
| Q: i have this problem, i'm using the JdbcOdbc driver for MS Access, and it's work but it's produce ... A: I've never use JdbcOdbc before so its hard to determine the problem. It is possible but unlikely ... | |
| about swing and awt | 7/8/2004 |
| Q: what is the basic difference between awt and swing. is awt is peer base? if so how's that work ? ... A: AWT is peer based. In the AWT framework the operating system provides the controls. And all of the ... | |
| Saving a linked list | 7/4/2004 |
| Q: i have two linked lists, called patient and doctor. I want to save the data in the linked list to a ... A: If you want a simple way of storing objects you can use the ObjectOutputStream and OBjectInputStream ... | |
| What is the difference between ActionListener and MouseListener? | 7/1/2004 |
| Q: What is the difference between ActionListener and MouseListener? I want to know wether ... A: The actionListener is called when an action is performed. I.e. a button is clicked or the components ... | |
| closing a frame with a JButton | 6/29/2004 |
| Q: i am writing a program that simulates a hospital. in that the user is presented with a screen that ... A: when the button is pressed simply call setVisible(false) then dispose() on the Frame. No need for ... | |
| Unloading and Loading another window? | 6/24/2004 |
| Q: first, i'm just a begginer in Java so i'm not sure if my my question would be exact has i want to ... A: To show a splash screen use a JWindow, since a JWindow has no borders or title bars. You can add an ... | |
| Java: How to access a java file | 6/4/2004 |
| Q: I am making a game which is similar to "Who Wants to be a Millionaire" and I am wondering how I ... A: If I understand your question correctly: You want to load a file that has the next question so you ... | |
| Help with Java | 5/30/2004 |
| Q: I am trying the following, a client app will take an image and send it via tcp to a server. The ... A: Well its not very hard: import java.net.*; import java.awt.*; import javax.swing.*; ... final ... | |
| JAVA | 5/29/2004 |
| Q: about java bean, why we write the static key word in main function , and why we write the key word ... A: main is static since its a more minimal starting point. If main was not static then the class that ... | |
| Data Encryption | 5/26/2004 |
| Q: May i ask is there any data encryption technique in JAVA? and what is the method/technique do JAVA ... A: Yes there is enncryptions rotinues in the java sdk. Look at the documentation for java security ... | |
| java input | 5/24/2004 |
| Q: How can i input (strings,values)from key boad using JAVA.& How can i creat simple interface for ... A: well for gui apps, you have to make a text field and say a button for the user to click when they ... | |
| java | 5/21/2004 |
| Q: 1)when we are using vector? vector is thred safe it contain all methods are synchronized?when will ... A: 1) I would have to look at the source code. If it isn't then you can synchronize on the vector to ... | |
| java coding | 5/17/2004 |
| Q: respected sir my final year project is image compression.in that i want to create archieve ... A: Your question is unclear. Do you want to use a local directory on the harddrive or not? What files ... | |
| About Java | 5/15/2004 |
| Q: When I go to play games on yahoo or pogo or any other web site it tells me i don't have java ... A: just because you have windows XP doesn't mean you have java installed. goto ... | |
| JAVA | 5/11/2004 |
| Q: hey i really appreciated your help, i've been voting for you and nominating as well! its helping me ... A: Something like this: int hit = 0; for(int i = 0; i < 3;i++) { char userChar = ... | |
| JAVA | 5/9/2004 |
| Q: hey man, so far im progressing good with my program. i've been able to easily create 3 random ... A: Although your approach would work preferably you don't want to simply "retry until you get it". The ... | |
| help | 5/7/2004 |
| Q: just need a basic code of drawing a map.hi, help me with a code for drawing a map of a country, i.e ... A: Well if you have the gif, jpeg, or png of the map you can create an Image using ToolKit.getImage(URL ... | |
| image | 5/7/2004 |
| Q: In coding how can we identify image is grayscale or color? plz tell me A: Although there are spefic techniques depending on the format of the image, if you want a general ... | |
| Programming Project - Need Assistance | 5/6/2004 |
| Q: I'm having some difficulty writing a program. The requirements are listed below. Basically the ... A: Well I don't really have the time to look though your code, but for say average you simply sum up ... | |
| BLUEJ | 5/4/2004 |
| Q: I have Windows Me on my System.Where can I use these commands then? Please suggest. -pl.Hello Sir, ... A: If you cannot find the command prompt, then you can make a batch file with those commands. Just ... | |
| BLUEJ | 5/3/2004 |
| Q: .. My problem is ....... I have recently installed Bluej from a CD , on my system.Installation was ... A: well I tried it and it works for me... try using this command in this command in the commandprompt: ... | |
| Other aproach i took | 5/2/2004 |
| Q: this is how i tried making the images work ... but my applet does not initialize :( maybe you can ... A: Double check where the images are trying to be loaded from. You should never assume the location of ... | |
| JAVA APPLET... making a game | 5/2/2004 |
| Q: i have this war card game to write and i was so stuck on it that i did it the simplest way i could ... A: The most common mistake in loading images is that they are dynamically loaded, so multiple images ... | |
| Touchgraph link browser right click won't work in linux jre 1.4.2 | 5/1/2004 |
| Q: Wanted to mention that the touchgraph link browser(java client) client starts correctly in Redhat 9, ... A: Im probably a bit out of my league on this one, but my best guess is that right-clicking is not ... | |
| java objects | 4/25/2004 |
| Q: How can we know number of objects in java?Give me example code? A: First consider if profiling is what you need, if you need this look at the documentation for the ... | |
| interaction of Java with C | 4/24/2004 |
| Q: I have a program in c which takes in command line arguments and process them. Now, I need to make a ... A: You aren't 100% clear on what you want. You can execute the java virtual machine and pass it the ... | |
| Hi Artemus, How can I remove... | 4/23/2004 |
| Q: How can I remove (not disable) the closing button on the right top corner of a JFrame? If can't ... A: The closest answer I have is to use setUndecorated(true) on the frame. Unfortunally this also ... | |
| java | 4/21/2004 |
| Q: How we can swing an applet? A: well the same way you would upgrade an application into Swing. Go though and change the various ... | |
| java | 4/21/2004 |
| Q: What is the purpose of applet programming? A: Applet programming allow the creation of applets which can be automaticly downloaded and run in the ... | |
| File filters | 4/18/2004 |
| Q: ! im using jdk1.4.1. I want to know how to extend the "javax.swing.filechooser.FileFilter" class so ... A: Well its fairly simple: there are two methods that are needed to be implemented: accept(File f) ... | |
| java banner | 4/16/2004 |
| Q: I am attempting to place a rotating banner system on my web site. I use coffee cup fro HTML and ... A: well it looks a bit confusing, but try continuing the pattern by adding more of the same statements. ... | |
| java | 4/15/2004 |
| Q: What is a byte code? What is the difference between .exe file and byte code? A: well an exe is a program that can run on a Windows machine. byte code is the compiled code, but it ... | |
| get a Class path | 4/15/2004 |
| Q: Sorry, this is not exactly my question. What I really need is that I have a java class, let's say ... A: oh thats easy: In your example: java.net.URL url = Test.class.getResource("Test.class"); would get ... | |
| get a Class path | 4/13/2004 |
| Q: How can I get a Java Class file path for a non-Servlet class? Thanks a lot! Zhenwu A: Well first I ask why do you need the class path, since you very rarely need it directly. to get the ... | |
| java | 4/7/2004 |
| Q: Why AWT components are called as heavy weight components and SWING components are called as light ... A: Heavy weight since they are pinned down to the window, for example if you try and draw over the ... | |
| java | 4/6/2004 |
| Q: How does thread synchronization occur in a monitor? A: well simply put when you synchronize on an object or declare a (non-static) method to be ... | |
| background image of Applet | 4/4/2004 |
| Q: How to make background image (with .gif or .jpeg) of an Applet? Best of all, refer me some sample ... A: if your not using swing then add (possibly create) a call to paint a paticular image e.g. import ... | |
| java | 4/4/2004 |
| Q: Which is the base class for all swing components? A: You really should find this out yourself. But JComponent is the base class for all swing components ... | |
| java | 4/2/2004 |
| Q: what is a JAR file? A: a JAR file is just like a zip file except that it uses '/' as the directory sperator instead of '\'. ... | |
| java | 4/2/2004 |
| Q: what is the function of garbage collector? A: The garbage collector is responsible for unallocating unused memory. In that every time you create a ... | |
| java | 4/1/2004 |
| Q: I am working on project IMAGE COMPRESSION.I want to make new archive means new file &then add the ... A: If your going to be doing your own compression | |