| Subject | Date Asked |
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| java performance and full control of the hardware | 11/17/2009 |
Q: I was thinking if java can take the advantages of C++ in performance(speed) and full control of the ...
A: Some years ago Java was solwer than C++. Now days, Java 1.6 can be faster than C++. Both Java and ...
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| Counting sub-sets | 11/14/2009 |
Q: Can you please tell me this program? I would greatly appreciate it! I dont even know how to begin ...
A: We know that there are 2 by the power of the set size possibilities. For example, this set's size ...
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| Output to file | 11/12/2009 |
Q: please tell me how to save the output into a text pad. the following code is showing output in ...
A: You have two easy ways: 1) when running the Java program redirect the output into a file: Usually ...
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| calling an array from constructor | 11/10/2009 |
Q: I am writing a program about a long jump competition. At the being the program you state how much ...
A: There are a couple of things you should consider. 1) Why are using array int[] and not ArrayList? ...
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| Swing, 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: I can't give you code as this task is a bit complicated and seems like a homework. I can give the ...
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| Classpath usage | 11/6/2009 |
Q: Good day there! I have here a link to a built-in class of what I am going to use, but I don't know ...
A: Don't extract the JAR file. If you use an IDE (such as Eclipse or Intellij) then you should go to ...
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| Class usage | 11/2/2009 |
Q: Good day there! I have here a link to a built-in class of what I am going to use, but I don't know ...
A: The link is for the statistics methods in class rvl.stat.dist.Tukey. I am not an expert in ...
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| Stop Words | 10/31/2009 |
Q: Sir, I want to make a program which can remove the stop words. I tried to do it using StopWords ...
A: I'm sorry but there isn't enough information to answer this question. What is the full name of the ...
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| 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 some practices that should be kept when reading and writing files. See here, for example: ...
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| Java application - login and connect to DB | 10/20/2009 |
Q: Respected Sir, I am given a task to create an Employee Database for an organisation.I ...
A: Your problem is indeed clear. But you have not answered my questions. Where is you data [eg.: ...
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| Maximum/Minimum | 10/20/2009 |
Q: I am struggling with finding maximum and minimum out of a set of data NOT in an array. The task was ...
A: First the MIN problem, then about an array. (1) If you didn't set an initial value to 'minimum' then ...
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| Finding Fastest Solution to Maze Using Stack | 10/19/2009 |
Q: Hey, I am having issues finding the fastest solution to a maze. I have found code on your site ...
A: You have two options: only save the best path length, or save all paths. To save the best path ...
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| Finding Fastest Solution to Maze Using Stack | 10/19/2009 |
Q: Hey, I am having issues finding the fastest solution to a maze. I have found code on your site ...
A: In order to find the fastest path add to the existing DFS code 3 changes: 1. Count the length of the ...
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| Random questions | 10/17/2009 |
Q: I was wondering if you could maybe help me, I am working on a project that requires me to create a ...
A: Juan, This is the actual code. Simply put it in you Class and call it from your "main" method. I ...
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| how to create questions | 10/17/2009 |
Q: I was wondering if you could maybe help me, I am working on a project that requires me to create a ...
A: In my answer, the boolean array "chosen" prevents from questions to be picked again - you can call ...
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| Java runtime | 10/16/2009 |
Q: what is java? what happens if i remove java? java is taken up 90kb.I have low disk space and I ...
A: Java is a runtime environment to execute Java programs. Java programs are not installed on your ...
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| Casting, Datatype Double | 10/15/2009 |
Q: i am doind some homework for my Java module and have got stuck on this question. it is as follows. ...
A: I must admit there are better places to find a complete answer for "casting" question, such as: ...
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| Java application - login and connect to DB | 10/14/2009 |
Q: Respected Sir, I am given a task to create an Employee Database for an organisation.I ...
A: First a few sentences about application structure and then some clarification regarding your ...
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| how to create questions | 10/13/2009 |
Q: I was wondering if you could maybe help me, I am working on a project that requires me to create a ...
A: I need more details to be able to give a good answer. Two points I can suggest at the moment: (1) ...
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| Excel in Java | 9/23/2009 |
Q: Sir I am developing one Share Market application in java. So I want to insert the data in Excel ...
A: Two options: (1) Try to load the driver: final Class<?> driverClass = ...
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| 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 don't need to learn Java for this. A web-site (and any application) is composed of three ...
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| How get the color name? | 9/14/2009 |
Q: First I would like to apologize for my mistakes in English. I am in Brazil, I am Brazilian, I speak ...
A: I suggest you search the web for PixelGrabber: ...
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| random words | 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: My best advise for a beginner is to use as many methods as possible. You seem to understand the ...
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| book | 9/10/2009 |
Q: Which is the best book in java?
A: It depends on you want to achieve from Java. And even then there is no easy answer. I would ...
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| send email to the client | 9/9/2009 |
Q: sir, i want to do, when any client registered on my site i want to sent email on his mail id.how ...
A: Sorry for the late response. It's difficult answering this question without knowing the workarounds ...
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| java classes and set methods | 9/8/2009 |
Q: i'd like to know how to create a sub class with set and get methods. ur help will be appreciated. ...
A: Set and get of what? Subclass of what? - Sub class simply extends another class. For example: class ...
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| Running applet | 9/1/2009 |
Q: I'm Angela and I'm currently learning Java using a MacBook. I'm trying to create my first applet, by ...
A: I tried your HTML code using Firefox. It showed: My Java applet says: [error message] So html code ...
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| integer condition | 8/26/2009 |
Q: what an if statement that prints the messages "The number is valid" if the variable speed is within ...
A: Is this what you meant? public void checkSpeed (int speed) { if (speed >= 0 && speed <= 200) { ...
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| programming | 8/22/2009 |
Q: using the import java.util.Scanner, how can I develop an application that reads product id, product ...
A: Please read here: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.html and here ...
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| find string or not | 8/21/2009 |
Q: sir , i have three type of string String s1="200908211738049843-89502501500"; String ...
A: Have a look at this method: public void checkString (String s) { if (s.equals(s1) || ...
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| Is the String an Integer | 8/18/2009 |
Q: sir, i have one string, String s="12387500027"; but i have to check in my string s ,there is ...
A: You have two options: (1) try { Integer.parseInt(s) } catch (NumberFormatException e) { // The ...
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| read XML file | 8/12/2009 |
Q: sir, i have one file "postto.txt" file is text file and inside of dis file this is written "<?xml ...
A: Your "text" file is an XML file. Here is a code example, you should read more on the web. ...
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| Develop Communication Server | 8/4/2009 |
Q: My task is to develop program for handle vehicle tracking system. Data packets are coming from ...
A: I cannot send an example, as it will be too long. I can tell you what you need, and you should look ...
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| call a function every 10 min | 8/3/2009 |
Q: sir, i m not expert ,i m just begener so plz can u write sime code for ,if i have 2 class CLASS ...
A: I apologize for the delay in my response. The best method to call to wait time T is ...
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| java | 7/31/2009 |
Q: Please kindly help me with this problem, I would like to create a program that will ask the user to ...
A: I am sorry, but is too much of a home-work question, which we are not suppose to answer. I will tell ...
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| Comparing 2 arrays and adding and deleting from the destination array | 7/28/2009 |
Q: I want to write a Java program that has two arraylist, one named as srcList and the other as ...
A: I will not give a complete solution. Here is one loop. I trust in your ability to write the other. ...
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| get my IP | 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: (1) Regrading your IP address: - whatismyip.com gives your WAN IP - the IP as your network connects ...
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| javascript: Date | 7/20/2009 |
Q: how to find the difference between two days in java script? Now store the difference, in days in an ...
A: Here you can see some of Javascript date functions: ...
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| Creating and manipulating Array Of Objects | 7/19/2009 |
Q: Iam unable to visualize the concept of array of objects. Please help me understand the same with an ...
A: First I will answer your question regarding the type of the array and then we'll continue with the ...
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| Creating and manipulating Array Of Objects | 7/16/2009 |
Q: Iam unable to visualize the concept of array of objects. Please help me understand the same with an ...
A: An array of objects is simply a sequence of objects one after the other. Think of a shopping list: ...
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| how to partially upload my pdf files | 7/15/2009 |
Q: sir ,please tell me how can i upload my pdf file on my server so before fully upload first i can ...
A: There are two options: (1) You load all the file and than use a program like TrID: ...
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| How to invoke browser based XML query through java program | 7/9/2009 |
Q: Here is the scenario, which i execute manually. I have a server where java based web application ...
A: You plan is excellent. I am not sure what do you mean by "send the XML query to the web ...
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| Jfreechart - compiling | 7/2/2009 |
Q: I need Jfreechart library for my application.I cannot understand its manual.can you please explain ...
A: To include any library with your compilation, you include it in the classpath. Example: javac -cp ...
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| jar file dought!! | 6/23/2009 |
Q: sir, this is venkatesh and i am an engineering student.i have a little knowledge of jar file.now i ...
A: Inside the JAR there is a Manifest file. In that file there is a classpath. I guess that the entry ...
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| Help Me | 6/22/2009 |
Q: Java Script is better than other scripting languages for web design ???? plz give me anwer in detail ...
A: JavaScript is very popular, so you can find many examples. It easy to learn and easy to write. But ...
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| Printing with java | 6/16/2009 |
Q: your answer to my last question about printing was excellent, and it makes a lot of sense to me, but ...
A: The example you used (the first on the page) is based on: "If your OS and printer supports it, you ...
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| Print Pattern | 6/15/2009 |
Q: First of all sorry to ask such a dum question i am a dum dum Can you help me write a program to ...
A: Yes I can help you. This is a rather simple loop. As you can see here: 1234* 123* * 12* * * 1* * * * ...
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| Java Massanger | 6/13/2009 |
Q: I want to create a messenger in Java I have very small knowledge in Java What skills should i have ...
A: You need to learn a bit about Socket. Once you have an open socket you can send or receive data on ...
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| cannot detect the run time error | 6/12/2009 |
Q: the given program reads a file and seperates the string which matches witha given string and then ...
A: "at b1.main(b1.java:65)" means the error occurred on line 65. Line 64 is: int pos=str.indexOf('.'); ...
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| java array object | 6/10/2009 |
Q: if you have information like this : cheese burger main meal 11.00 hot wings stater 12.30 ...
A: My answer is the same. Example: _____FoodArray___SalesArray ------------------------------ ...
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| java array object | 6/9/2009 |
Q: if you have information like this : cheese burger main meal 11.00 hot wings stater 12.30 ...
A: If I understand the question correctly, try this: String foodSold = "hot wings"; int i = ...
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| Java printing | 6/8/2009 |
Q: this might be trivial for you, but belive me I'll appreciate your guidance. I just finished coding a ...
A: Sorry for the delay. Have you tried this: ...
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| Java printing | 6/4/2009 |
Q: this might be trivial for you, but belive me I'll appreciate your guidance. I just finished coding a ...
A: Sorry, I don't understand the"how do I print this?" What do you mean by "print"? Print to the ...
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| Threads and try/catch | 6/1/2009 |
Q: why we are writing java thread code inside try/catch block? ANSWER: Hi Pratap, Usually, Thread ...
A: another thread interrupts it using the [interrupt] method in class Thread. See here: ...
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| Threads and try/catch | 5/30/2009 |
Q: why we are writing java thread code inside try/catch block?
A: Usually, Thread calls, such as: try { thisThread.sleep(interval); } catch ...
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| Java Earlier Version Warning Message | 5/29/2009 |
Q: I play some java-based games on my laptop with the most recent version of java... and there are ...
A: The best solution I know is to remove the older versions of Java from your PC. - Close all the ...
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| Findind a job in Java, having a SCJP | 5/23/2009 |
Q: i am 21 years old and i only have matric qualification and im currently doing sun certified java ...
A: The answer depends on where you will look for a job. Some places put a strong emphasis on your ...
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| Adding images in JAR File | 5/17/2009 |
Q: Ziv Ben I've just completed my project in java. And now i want to make executable JAR ...
A: Here is a quick solution. After you created the simple JAR, using Eclipse, you can open that JAR ...
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| chat program | 5/15/2009 |
Q: what code to select contact from list and show private chat for this contact ?
A: The main question is whether you need a server to connect between clients or client-to-client ...
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| JNI question!!!! | 5/14/2009 |
Q: I've one problem in getting the value of enum variable in JNI function ,which is residing in one ...
A: I admit I am not an expert on JNI. As you mentioned: "Probably obj is not fine here" I see that: ___ ...
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| 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: y. Using an array is a good and simple implementation. A better option is a Linked-List. Or, an ...
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| java constructor | 5/3/2009 |
Q: public Customer (Time24Hour arrival, Time24Hour trans, int custId) { // you fill in arrival = new ...
A: If I understand what you are trying to do, then this is not a proper constructor. Here is how I see ...
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| 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: I see you understand that static variables are the same for all instances of the classes, and that ...
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| java compiler and decompiler | 4/25/2009 |
Q: I'd like to know some more about Java. And that is if I can decompile any professional software ...
A: Obviously a Java decompiler should be able to decompile any professional Java software - i.e., it ...
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| clear screen applet | 4/2/2009 |
Q: now... when ever click on clear button then it clear the applet screen and reload and the command ...
A: Sorry for the delay in my response. I was considering how to clear the command prompt, when I saw ...
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| allign the string output (printf) | 4/1/2009 |
Q: Could you help me with the following please? I am printing(outputting) from a string linkedList both ...
A: Here is a starting point: public static void main(String[] args) { String words[] = {"could I ...
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| 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 am sorry for the delay in my response. I am not an expert in encryption, so I had to check around. ...
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| allign the string output (printf) | 3/30/2009 |
Q: Could you help me with the following please? I am printing(outputting) from a string linkedList both ...
A: You should read about Java's sprintf - PrintfFormat. Here is a link: ...
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| onlin exam | 3/28/2009 |
Q: ..Thanx for the previous help..... Actually my problem is...i need to write the source code in java ...
A: What you are asking here is not question - you are asking for an application (a small application). ...
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| Creating a distance conversion menu using a [void function] polymorphisms | 3/27/2009 |
Q: I have to write a program that gives a menu of distance conversions from meters to kilometers, ...
A: Usually the problem of "void function" is in C\C++, where the function signature is not so ...
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| increment decrement opertors | 3/26/2009 |
Q: how do increment and decrement operators work in an expression? is it that first all increment then ...
A: A post increment/decrement happens immediately after the expression is evaluated, and a pre ...
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| hi | 3/26/2009 |
Q: ..can u give me the source code for online exam application in java.. Thank you ANSWER: Hi Sweety, ...
A: I must admit I don't see the connection to the original question regarding the online exam. But ...
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| changing file's hidden property | 3/24/2009 |
Q: how can i access and change "hidden property" and "system property" of a file
A: To access such file attributes, by Java, you must use either: (1) Win32 API or (2) system calls. ...
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| 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: There are many formats for a file (Word, RTF, Text). I will assume you mean a normal text file. (A) ...
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| HTML (JavaScript) countdown page | 3/22/2009 |
Q: ..can u give me the source code for online exam application in java.. Thank you ANSWER: Hi Sweety, ...
A: If all you want is a time countdown than here is a nice solution: ...
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| controls in java | 3/20/2009 |
Q: can you help me with my code. here's the code i made.. import java.applet.*; import java.awt.*; ...
A: here is a simple answer that should work. (1) Move flavorGroup to be a global variable. (2) /** ...
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| online exam application | 3/20/2009 |
Q: ..can u give me the source code for online exam application in java.. Thank you
A: That's quite a question. It sounds as though you need JSP pages or a JavaScript application, unless ...
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| to print Unicode Assamese character in Java | 3/19/2009 |
Q: it is working now.. but create another proble...... To print word (for example: ...
A: I am not clear on what isn't working. Writing these characters in your Java editors depends on the ...
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| Unicode character print | 3/16/2009 |
Q: I want to print some unicode character(of Hindi language) as output. what are the procedure I have ...
A: I'm afraid the solution is a bit complex, there are some configuration files to be edited. I will ...
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| Unicode character print | 3/14/2009 |
Q: I want to print some unicode character(of Hindi language) as output. what are the procedure I have ...
A: You should search the web for "java unicode". Here is a short answer: (1) You should save the Java ...
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| Change Co-ordinates of Button | 3/9/2009 |
Q: How can we change co-ordinates of button on frame in java? I want to place button at particular ...
A: I am sorry for the delay in my response. Using JFrame and JButton (swing package) should work with ...
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| Displaying Arabic Strings | 3/6/2009 |
Q: I'm working on a project and was given some Arabic strings to be used in the program. I am supposed ...
A: Some text editors add some bytes at the beginning of a text file, when save it in UTF-8 (you can ...
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| Displaying Arabic Strings | 3/4/2009 |
Q: I'm working on a project and was given some Arabic strings to be used in the program. I am supposed ...
A: You should indeed save the file in UTF-8 format. Then, to compile it use: javac -encoding UTF-8 ...
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| Follow up on the last question | 3/3/2009 |
Q: In your answer you mentioned do not take the algorithm word by word but I don't know how else to do ...
A: You did a good job translating so far. I cannot give you a complete translation, as that is your ...
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| Need help on part of the code please | 3/2/2009 |
Q: I really am trying to write the code. It has been almost a week that I am working on this and I am ...
A: Don't take the algorithm word by word. If you are using switch-case you will have some duplicities. ...
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| Need help on part of the code please | 3/2/2009 |
Q: I really am trying to write the code. It has been almost a week that I am working on this and I am ...
A: The infix form 8 * 7 * 6 has two prefix forms: * 8 * 7 6 and * * 8 7 6. Option A: * 8 * 7 6 For ...
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| Need help on part of the code please | 3/2/2009 |
Q: I really am trying to write the code. It has been almost a week that I am working on this and I am ...
A: I have good news and bad news. The good news are that I will give you an answer. The bad news are ...
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