我有一个按钮可以删除现有的JPanel并添加新的JPanel。 但是当我按下那个按钮时，我的程序会挂起。 我使用jstack跟踪并发现程序停留在removeAll（）
这些是相关的线程转储：
"AWT-EventQueue-0" prio=6 tid=0x000000000df7f000 nid=0x394 runnable [0x000000002752a000]
java.lang.Thread.State: RUNNABLE
at java.lang.Thread.holdsLock(Native Method)
at java.awt.Component.checkTreeLock(Component.java:1199)
at java.awt.Component.getOpaqueShape(Component.java:9804)
at java.awt.Container.getOpaqueShape(Container.java:4066)
at java.awt.Component.calculateCurrentShape(Component.java:9892)
at java.awt.Component.applyCurrentShape(Component.java:9925)
at java.awt.Container.recursiveApplyCurrentShape(Container.java:4132)
at java.awt.Container.recursiveApplyCurrentShape(Container.java:4111)
at java.awt.Component.applyCurrentShapeBelowMe(Component.java:9943)
at java.awt.Component.mixOnHiding(Component.java:10003)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at java.awt.Container.mixOnHiding(Container.java:4265)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at java.awt.Component.removeNotify(Component.java:7027)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at java.awt.Container.removeNotify(Container.java:2816)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4771)
at java.awt.Container.removeNotify(Container.java:2800)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4771)
at java.awt.Container.removeNotify(Container.java:2800)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4771)
at java.awt.Container.removeNotify(Container.java:2800)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4771)
at java.awt.Container.removeNotify(Container.java:2800)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4771)
at java.awt.Container.removeAll(Container.java:1290)
- locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
at com.james.Dev.Dev$5.run(Dev.java:945)
at com.james.guiUtil.SwingUtils$1.run(SwingUtils.java:485)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:738)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:699)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:708)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
at java.awt.Dialog.show(Dialog.java:1082)
at java.awt.Component.show(Component.java:1655)
at java.awt.Component.setVisible(Component.java:1607)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at com.axi.guiUtil.BusyCancelDialog.setVisible(BusyCancelDialog.java:136)
at com.james.gui.Dev.Dev.populateWithProjectData(Dev.java:999)
at com.james.gui.Dev.Dev.start(Dev.java:1910)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
at java.awt.Component.processMouseEvent(Component.java:6516)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6281)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4872)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:740)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:699)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:713)
at java.awt.EventQueue$4.run(EventQueue.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:710)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
我对分析线程转储的知识有限，但我做了一些研究。
按locked <0x0000000089600fd0> (a java.awt.Component$AWTTreeLock)
这是否意味着AWT-EventQueue-0持有这些组件？如果是，那么为什么AWT-EventQueue-0不会删除该组件，因为它拥有＆＃34;组件并处于可运行状态？谢谢！