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1. Help with java GUI- has error in main thread    stackoverflow.com

Basically im trying to do a Insurance Application form in java. And it uses multiple JPanels in a JFrame. -adding of JPanel into main program frame was done like this:

//jpCenterArea ...

2. Exception in thread "main" error    stackoverflow.com

This is the only error that I see in my code. It is this line:

public class VolCac extends JFrame implements ActionListener{

3. Main Thread vs. UI Thread in Java    stackoverflow.com

In many Swing snippets given here as answers, there is a call to SwingUtilities#invokeLater from the main method:

public class MyOneClassUiApp {

    private constructUi() {
   ...

4. Prevent Main UI to collapse from child thread    stackoverflow.com

I am facing this issue, I have

   class FinalUI1 extends javax.swing.JFrame 
     {
       //do something 
   ...

5. Exception in thread "main" java.lang.ClassFormatError:    stackoverflow.com

In my Java project, it worked perfectly without any issues. But when I tried to run it now, it gives me the following error. I googled, but couldn't find a proper ...

6. Main Thread and Swing Thread    coderanch.com

Hi all Recently I am focus designing a "filter" into a program, the process is as following: 1. pass an Array of String into Filter class Filter filter = new Filter(String[] array) 2. use method chooseArray() to choose some string from the Array, and return String[] newArray = filter.chooseArray() For the choosing process, I want to use Swing to create a ...

7. Exception in thread "main"    coderanch.com

8. exception in thread main problem    coderanch.com

need help finding the problem with my code.anything i try running the code it tells exception in thread main.am useing jdk1.5.0_08.please somebody tell me what is wrong and what to do.thanks for your ever listening hears. my code: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Calculator extends JFrame { private Display out; private Keypad in; private Maths sums; public Calculator( ...

9. Main thread is hanging while 2 child threads running??    coderanch.com

Hi, I am having a progress bar in my swing application. Data to update the progress bar comes from an input stream which is got from a process.getInputStream(). I have a Thread which reads in data(from the process.getInputStream()) into a variable . And this variable is accessed by another Thread to update the progress bar seamlessly. Totally I have 3 threads. ...

10. Other threads still running where main thread exits    coderanch.com

Hi, I am running GUI application from USB device. This application takes time to launch, so i add a hour glass for that. This hour glass will come untill application show its main frame. Now, the problem is, if i plug out the USB device just before the main frames comes, the hour glass is running indefinatly. I checked Task manager. ...

11. Exception in thread "main" java.lang,NullPointerException    java-forums.org

Please help! I am getting the following error in the program I have provided below. "Exception in thread "main" java.lang.NullPointerException." Can anyone help me? Thank you. Java Code: // CheckPoint: Inventory4.java // Week 7 // This program calculates inventory value public class Inventory4 { public static void main( String args[] ) { double restockingFee = 0.05; manufacturer[] inventory = new manufacturer[100]; ...

12. Exception in thread "main" java.lang.NullPointerException.. PLS HELP    java-forums.org

import javax.swing.*; public class BruteForce { private String text; private String pattern; public BruteForce(){ int p = pattern.length(); int t = text.length(); int match = 0; text = JOptionPane.showInputDialog("input text"); pattern = JOptionPane.showInputDialog("input pattern"); for(int i=0;i

13. Exception in thread "main" java.lang.NullPointerException    java-forums.org

Am trying a program to encrypt a string using 3DES. Source code of the program - import java.util.*; import javax.crypto.*; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import java.security.*; public class TripleDESTest { public static void main(String[] args) throws Exception { String text = "kyle boon"; byte[] codedtext = new TripleDESTest().encrypt(text); String decodedtext = new TripleDESTest().decrypt(codedtext); System.out.println(codedtext); System.out.println(decodedtext); // This correctly shows "kyle boon" ...