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POJFileChooser launch problems
 

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    <p>I am having problems starting any application on my development machine that uses the 'JFileChooser' Swing object. When I originally developed the application and tested it , the File Chooser window opened and everything was fine but like after a week , I tried running the app again and nothing would show at all.</p> <p>At first I thought it was a Threading problem( My original app used a little multi-threading), so I coped and pasted the following code ( I got the code from the Internet ) to test it out:</p> <pre><code>package com.kwm.util.test; import java.awt.*; import java.awt.event.*; import java.io.*; import javax.swing.*; public class Main { public static void main(String[] args) { final JFrame frame = new JFrame("JFileChooser Demo"); final JFileChooser fc = new JFileChooser(); fc.setMultiSelectionEnabled(true); fc.setCurrentDirectory(new File("C:\\tmp")); JButton btn1 = new JButton("Show Dialog"); btn1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { fc.showDialog(frame, "Choose"); } }); JButton btn2 = new JButton("Show Open Dialog"); btn2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int retVal = fc.showOpenDialog(frame); if (retVal == JFileChooser.APPROVE_OPTION) { File[] selectedfiles = fc.getSelectedFiles(); StringBuilder sb = new StringBuilder(); for (int i = 0; i &lt; selectedfiles.length; i++) { sb.append(selectedfiles[i].getName() + "\n"); } JOptionPane.showMessageDialog(frame, sb.toString()); } } }); JButton btn3 = new JButton("Show Save Dialog"); btn3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { fc.showSaveDialog(frame); } }); Container pane = frame.getContentPane(); pane.setLayout(new GridLayout(3, 1, 10, 10)); pane.add(btn1); pane.add(btn2); pane.add(btn3); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 200); frame.setVisible(true); } } </code></pre> <p>And still I see nothing. I am guessing the Machine has a problem but am unable to identify what the problem is.</p> <p>Any help with this would be greatly appreciated.</p> <p><strong>EDIT 1</strong> The OS Version is Windows Server 2003 Enterprise Version, SP1</p> <p>The Java version is : 1.5.0_12 ( both JDK and JRE)</p> <p>I am also afraid that this may be related to a Network problem... JFileChooser is looking for a network directory and the DNS may be conflicting. Is there a way to check this? Maybe check what JVM is logging?</p>
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    1. USKris Ogirri
    1. USKris Ogirri
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    1. COIf you suspect your system is the culprit, information about your PC could be useful. (OS? JRE version? etc.)
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      1. UScoobird
    2. COProbably not the cause of the immediate problem, but Swing GUIs should be constructed on the EDT.
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      1. USAndrew Thompson
    3. CO@Andrew: What do you mean by 'Swing GUIs should be constructed on the EDT. '? A URL would be helpful.. Please also note that the code snippet above was simply used to test whether the problem was from my original application or a machine-related cause. Thanks.
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