以下是代码的输出结果：
下面的代码显示了我的机器上的异常。
java.vendor Sun Microsystems Inc.
java.version 1.6.0_26
java.runtime.version 1.6.0_26-b03
sun.arch.data.model 32
os.name Windows XP
os.version 5.1
os.arch x86
Input selection cancelled by user.
Exception while removing reference: java.lang.InterruptedException
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at sun.java2d.Disposer.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
下面的代码显示了我的机器上的异常。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class GUI extends JPanel implements ActionListener {
private final String newline = System.getProperty("line.separator");
JButton openButton;
JTextArea log;
JFileChooser fc;
public GUI() {
super(new BorderLayout());
log = new JTextArea(20,40);
log.setMargin(new Insets(5,5,5,5));
log.setEditable(false);
fc = new JFileChooser();
openButton = new JButton("Open");
openButton.addActionListener(this);
JPanel buttonPanel = new JPanel(); //use FlowLayout
buttonPanel.add(openButton);
add(buttonPanel, BorderLayout.NORTH);
add(new JScrollPane(log));
showProp("java.vendor");
showProp("java.version");
showProp("java.runtime.version");
showProp("sun.arch.data.model");
showProp("os.name");
showProp("os.version");
showProp("os.arch");
}
public void showProp(String name) {
output(name + " \t" + System.getProperty(name));
}
public void output(String msg) {
log.append(msg + newline);
log.setCaretPosition(log.getDocument().getLength());
System.out.println(msg);
}
public void actionPerformed(ActionEvent e) {
//Handle open button action.
int returnVal = fc.showOpenDialog(GUI.this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
//This is where a real application would open the file.
output(
"Input File Selected: " +
fc.getSelectedFile().getName() +
".");
} else {
output("Input selection cancelled by user.");
}
log.setCaretPosition(log.getDocument().getLength());
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event dispatch thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("IDE Output Converter");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Add content to the window.
frame.add(new GUI());
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event dispatch thread:
//creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
当我运行程序时，主窗口正常打开，程序工作正常。
但是，如果你：
- 使用“打开文件”按钮打开
JFileChooser - 点击取消，然后
- 退出程序
会抛出InterruptedException。或者，如果你选择一个文件并“打开”，然后退出程序，也会抛出同样的错误。在这个博客中，使用示例代码解释了同样的问题，他的解决方法是尽早调用new JFileChooser();，我已经这么做了但没有效果。
这是1.6.0_26版本中的bug吗？如果是，那么有没有对该版本的解决方法？
是代码的问题吗？如果是，怎么修复它？（看起来不太可能，因为另外两个空结果之一现在已被删除。）