Question

在我们的Java RMI分布式棋盘游戏中（玩家被视为一个虚拟环网络，其中一个玩家允许以下玩家在完成后立即轮到他），有时客户端无法初始化其GUI，因为发送它的人允许这样做会引起异常。例外情况如下：

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: No such child: 91
at java.awt.Container.getComponent(Container.java:327)
at javax.swing.JComponent.rectangleIsObscured(JComponent.java:4391)
at javax.swing.JComponent.paint(JComponent.java:1052)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5219)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:295)
at javax.swing.RepaintManager.paint(RepaintManager.java:1249)
at javax.swing.JComponent._paintImmediately(JComponent.java:5167)
at javax.swing.JComponent.paintImmediately(JComponent.java:4978)
at javax.swing.RepaintManager$3.run(RepaintManager.java:808)
at javax.swing.RepaintManager$3.run(RepaintManager.java:796)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:769)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:718)
at javax.swing.RepaintManager.access$1100(RepaintManager.java:62)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1677)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

因此客户端在登录窗口冻结，无法播放。有时会发生这种情况，有时则不然。我们不知道为什么，因为你可以看到有任何对我们的代码的引用，异常提出了......我们只是理解它是swing / awt的问题......你知道吗？

Answer 1

通常，只有在AWT / Swing Event Dispatch Thread之外执行GUI操作时才会出现此类错误。当Swing尝试重新绘制View时，似乎另一个Thread正在改变你的GUI。

您可以尝试http://www.swingexplorer.com/查找EDT违规行为，但该计划并非始终可靠。

[Java Swing AWT]：为什么我的代码引发了这个异常？

1 个答案: