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JOptionPane的奇怪出错

cxp108

发贴: 363
积分: 12

于 2003-10-14 10:58

在Applet中编写以下代码
public class ClusterParaDialog extends JDialog{
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private class cycleSaNoTFInputVerifier extends InputVerifier{
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JOptionPane.showMessageDialog(ClusterParaDialog.this,"content","dialog",JOptionPane.INFORMATION_MESSAGE);
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｝
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}
编译通过了
运行环境：JRE 1.3.1 就不会出现问题，显示正常
但是运行环境1.4.0~2版本的JRE会出现以下问题：

----------------------------------------------------------------------------------------
Exception occurred during event dispatching:

java.lang.StackOverflowError

  at sun.java2d.Disposer.add(Disposer.java:91)

  at sun.java2d.Disposer.addRecord(Disposer.java:68)

  at sun.awt.windows.Win32SurfaceData.initOps(Native Method)

  at sun.awt.windows.Win32SurfaceData.<init>(Win32SurfaceData.java:432)

  at sun.awt.windows.Win32SurfaceData.createData(Win32SurfaceData.java:311)

  at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java:321)

  at sun.awt.windows.WComponentPeer.setBounds(WComponentPeer.java:133)

  at sun.awt.windows.WComponentPeer.initialize(WComponentPeer.java:523)

  at sun.awt.windows.WCanvasPeer.initialize(WCanvasPeer.java:63)

  at sun.awt.windows.WPanelPeer.initialize(WPanelPeer.java:57)

  at sun.awt.windows.WWindowPeer.initialize(WWindowPeer.java:81)

  at sun.awt.windows.WDialogPeer.initialize(WDialogPeer.java:48)

  at sun.awt.windows.WComponentPeer.<init>(WComponentPeer.java:497)

  at sun.awt.windows.WCanvasPeer.<init>(WCanvasPeer.java:29)

  at sun.awt.windows.WPanelPeer.<init>(WPanelPeer.java:53)

  at sun.awt.windows.WWindowPeer.<init>(WWindowPeer.java:77)

  at sun.awt.windows.WDialogPeer.<init>(WDialogPeer.java:26)

  at sun.awt.windows.WToolkit.createDialog(WToolkit.java:368)

  at java.awt.Dialog.addNotify(Dialog.java:387)

  at java.awt.Window.pack(Window.java:428)

  at javax.swing.JOptionPane.createDialog(JOptionPane.java:899)

  at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:819)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:624)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:595)

  at com.cet.ui.ctcui.ClusterParaDialog$cycleSaNoTFInputVerifier.verify(ClusterParaDialog.java:1833)

  at javax.swing.InputVerifier.shouldYieldFocus(InputVerifier.java:114)

  at javax.swing.JComponent.runInputVerifier(JComponent.java:1104)

  at javax.swing.JComponent.requestFocus(JComponent.java:1109)

  at javax.swing.plaf.basic.BasicOptionPaneUI.selectInitialValue(BasicOptionPaneUI.java:849)

  at javax.swing.JOptionPane.selectInitialValue(JOptionPane.java:2126)

  at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:821)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:624)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:595)

  at com.cet.ui.ctcui.ClusterParaDialog$cycleSaNoTFInputVerifier.verify(ClusterParaDialog.java:1833)

  at javax.swing.InputVerifier.shouldYieldFocus(InputVerifier.java:114)

  at javax.swing.JComponent.runInputVerifier(JComponent.java:1104)

  at javax.swing.JComponent.requestFocus(JComponent.java:1109)

  at javax.swing.plaf.basic.BasicOptionPaneUI.selectInitialValue(BasicOptionPaneUI.java:849)

  at javax.swing.JOptionPane.selectInitialValue(JOptionPane.java:2126)

  at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:821)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:624)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:595)

  at com.cet.ui.ctcui.ClusterParaDialog$cycleSaNoTFInputVerifier.verify(ClusterParaDialog.java:1833)

  at javax.swing.InputVerifier.shouldYieldFocus(InputVerifier.java:114)

  at javax.swing.JComponent.runInputVerifier(JComponent.java:1104)

  at javax.swing.JComponent.requestFocus(JComponent.java:1109)

  at javax.swing.plaf.basic.BasicOptionPaneUI.selectInitialValue(BasicOptionPaneUI.java:849)

  at javax.swing.JOptionPane.selectInitialValue(JOptionPane.java:2126)

  at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:821)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:624)

  at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:595)

  at com.cet.ui.ctcui.ClusterParaDialog$cycleSaNoTFInputVerifier.verify(ClusterParaDialog.java:1833)
........
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

这个问题困扰了小弟很久，希望众大虾们帮着做个试验，看看到底是不
是JRE的问题，还是小弟代码写得不当所至。

作者	Re:JOptionPane的奇怪出错 [Re:cxp108]
jameszhang CJSDN高级会员发贴: 1594 积分: 111	于 2003-10-15 19:30 是你的内部类调的，JOptionPane 已经不属于了ClusterParaDialog ，是不是因为这个呢？ "First they ignore u, then they laugh at u, then they fight u, then u will win Mahatma Gandhi"

作者	Re:JOptionPane的奇怪出错 [Re:cxp108]
floater Java Jedi 总版主发贴: 3233 积分: 421	于 2003-10-15 22:06 I suspect that it's an infinite loop, like a cat chasing his own tail. Saw something similar before. You call swing classes and swing classes call your classes. "Any fool can write code that a computer can understand. Good programmers write code that humans can understand." - Martin Fowler, Refactoring - Improving the Design of Existing Code

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