Run the following regression test with XToolkit: test/java/awt/TrayIcon/FocusLostAfterTrayTest/test/java/awt/TrayIcon/FocusLostAfterTrayTest.java

It will dead lock. Here's the stack trace:

2005-08-17 14:08:12
Full thread dump Java HotSpot(TM) Server VM (1.6.0-ea-b42 mixed mode):

"TimerQueue" daemon prio=1 tid=0x08217c78 nid=0x44aa in Object.wait() [0x8f07a000..0x8f07a690]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb0300b70> (a javax.swing.TimerQueue)
        at javax.swing.TimerQueue.run(TimerQueue.java:233)
        - locked <0xb0300b70> (a javax.swing.TimerQueue)
        at java.lang.Thread.run(Thread.java:608)

"AWT-EventQueue-1" prio=1 tid=0x081e4f78 nid=0x4491 waiting for monitor entry [0x8f118000..0x8f119610]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at sun.java2d.x11.X11SurfaceData.isDrawableValid(Native Method)
        at sun.java2d.x11.X11SurfaceData$X11WindowSurfaceData.<init>(X11SurfaceData.java:536)
        at sun.java2d.x11.X11SurfaceData.createData(X11SurfaceData.java:355)
        at sun.awt.X11GraphicsConfig.createSurfaceData(X11GraphicsConfig.java:406)
        at sun.awt.X11.XWindow.validateSurface(XWindow.java:1066)
        at sun.awt.X11.XComponentPeer.setBounds(XComponentPeer.java:555)
        at sun.awt.X11.XTextAreaPeer.setBounds(XTextAreaPeer.java:285)
        at java.awt.Component.reshapeNativePeer(Component.java:2033)
        at java.awt.Component.reshape(Component.java:1989)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Component.setBounds(Component.java:1956)
        at java.awt.BorderLayout.layoutContainer(BorderLayout.java:813)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Container.layout(Container.java:1395)
        at java.awt.Container.doLayout(Container.java:1384)
        at java.awt.Container.validateTree(Container.java:1467)
        at java.awt.Container.validate(Container.java:1442)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Window.dispatchEventImpl(Window.java:2192)
        at java.awt.Component.dispatchEvent(Component.java:4177)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

"DestroyJavaVM" prio=1 tid=0x8fbe0710 nid=0x4427 waiting on condition [0x00000000..0xbfff9510]
   java.lang.Thread.State: RUNNABLE

"AWT-EventQueue-0" prio=1 tid=0x8fbc2e08 nid=0x4473 in Object.wait() [0x8f1b3000..0x8f1b3510]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb01a3cd0> (a java.awt.EventQueue)
        at java.lang.Object.wait(Object.java:484)
        at java.awt.EventQueue.getNextEvent(EventQueue.java:480)
        - locked <0xb01a3cd0> (a java.awt.EventQueue)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:245)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

"AWT-Shutdown" prio=1 tid=0x8fbc1028 nid=0x4472 in Object.wait() [0x8f234000..0x8f234490]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb016c860> (a java.lang.Object)
        at java.lang.Object.wait(Object.java:484)
        at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:259)
        - locked <0xb016c860> (a java.lang.Object)
        at java.lang.Thread.run(Thread.java:608)

"thread applet-FocusLostAfterTrayTest.class" prio=1 tid=0x8fb9de60 nid=0x446a waiting for monitor entry [0x8f2b5000..0x8f2b5810]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.awt.Window.getGraphicsConfiguration(Window.java:2498)
        - waiting to lock <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at sun.awt.X11.XWindow.initGraphicsConfiguration(XWindow.java:129)
        at sun.awt.X11.XWindow.preInit(XWindow.java:139)
        at sun.awt.X11.XComponentPeer.preInit(XComponentPeer.java:118)
        at sun.awt.X11.XWindowPeer.preInit(XWindowPeer.java:76)
        at sun.awt.X11.XDecoratedPeer.preInit(XDecoratedPeer.java:53)
        at sun.awt.X11.XFramePeer.preInit(XFramePeer.java:38)
        at sun.awt.X11.XEmbeddedFramePeer.preInit(XEmbeddedFramePeer.java:37)
        at sun.awt.X11.XBaseWindow.init(XBaseWindow.java:135)
        at sun.awt.X11.XBaseWindow.<init>(XBaseWindow.java:173)
        at sun.awt.X11.XWindow.<init>(XWindow.java:88)
        at sun.awt.X11.XComponentPeer.<init>(XComponentPeer.java:102)
        at sun.awt.X11.XCanvasPeer.<init>(XCanvasPeer.java:22)
        at sun.awt.X11.XPanelPeer.<init>(XPanelPeer.java:27)
        at sun.awt.X11.XWindowPeer.<init>(XWindowPeer.java:63)
        at sun.awt.X11.XDecoratedPeer.<init>(XDecoratedPeer.java:41)
        at sun.awt.X11.XFramePeer.<init>(XFramePeer.java:34)
        at sun.awt.X11.XEmbeddedFramePeer.<init>(XEmbeddedFramePeer.java:28)
        at sun.awt.X11.XToolkit.createEmbeddedFrame(XToolkit.java:846)
        at sun.awt.X11.XEmbeddedFrame.<init>(XEmbeddedFrame.java:35)
        at sun.awt.X11.XTrayIconPeer$2.<init>(XTrayIconPeer.java:65)
        at sun.awt.X11.XTrayIconPeer.<init>(XTrayIconPeer.java:61)
        at sun.awt.X11.XToolkit.createTrayIcon(XToolkit.java:873)
        at java.awt.TrayIcon.addNotify(TrayIcon.java:638)
        - locked <0xb0397e10> (a java.awt.TrayIcon)
        at java.awt.SystemTray.add(SystemTray.java:231)
        at FocusLostAfterTrayTest.start(FocusLostAfterTrayTest.java:77)
        at sun.applet.AppletPanel.run(AppletPanel.java:457)
        at java.lang.Thread.run(Thread.java:608)

"AWT-XAWT" daemon prio=1 tid=0x8fb99370 nid=0x4464 waiting for monitor entry [0x8f336000..0x8f336710]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at sun.awt.X11.XToolkit.waitForEvents(Native Method)
        at sun.awt.X11.XToolkit.run(XToolkit.java:570)
        at sun.awt.X11.XToolkit.run(XToolkit.java:545)
        at java.lang.Thread.run(Thread.java:608)

"Java2D Disposer" daemon prio=1 tid=0x08154970 nid=0x4456 in Object.wait() [0x8f3cb000..0x8f3cb690]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb0168468> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
        - locked <0xb0168468> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
        at sun.java2d.Disposer.run(Disposer.java:107)
        at java.lang.Thread.run(Thread.java:608)

"Low Memory Detector" daemon prio=1 tid=0x8fb3d2e0 nid=0x4443 runnable [0x00000000..0x00000000]
   java.lang.Thread.State: RUNNABLE

"CompilerThread1" daemon prio=1 tid=0x8fb3c008 nid=0x4442 waiting on condition [0x00000000..0x8f77bab8]
   java.lang.Thread.State: RUNNABLE

"CompilerThread0" daemon prio=1 tid=0x8fb3b0f8 nid=0x4441 waiting on condition [0x00000000..0x8f7fca38]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=1 tid=0x8fb3a1d0 nid=0x4440 waiting on condition [0x00000000..0x00000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=1 tid=0x8fb2e5c8 nid=0x443a in Object.wait() [0x8f8ff000..0x8f8ff790]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb00d0ae0> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
        - locked <0xb00d0ae0> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=1 tid=0x8fb2d8c8 nid=0x4439 in Object.wait() [0x8faff000..0x8faff710]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xb00d09e8> (a java.lang.ref.Reference$Lock)
        at java.lang.Object.wait(Object.java:484)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
        - locked <0xb00d09e8> (a java.lang.ref.Reference$Lock)

"VM Thread" prio=1 tid=0x8fb294e8 nid=0x4438 runnable

"GC task thread#0 (ParallelGC)" prio=1 tid=0x080d73a0 nid=0x4434 runnable

"GC task thread#1 (ParallelGC)" prio=1 tid=0x080d7788 nid=0x4435 runnable

"GC task thread#2 (ParallelGC)" prio=1 tid=0x080d7b70 nid=0x4436 runnable

"GC task thread#3 (ParallelGC)" prio=1 tid=0x080d8350 nid=0x4437 runnable

"VM Periodic Task Thread" prio=1 tid=0x8fb3e7d0 nid=0x4444 waiting on condition

JNI global references: 671


Found one Java-level deadlock:
=============================
"AWT-EventQueue-1":
  waiting to lock monitor 0x080d92ec (object 0x90369fc8, a java.lang.Class)
  in JNI, which is held by "thread applet-FocusLostAfterTrayTest.class"
"thread applet-FocusLostAfterTrayTest.class":
  waiting to lock monitor 0x080d936c (object 0xb011d7a0, a java.awt.Component$AWTTreeLock),
  which is held by "AWT-EventQueue-1"

Java stack information for the threads listed above:
===================================================
"AWT-EventQueue-1":
        at sun.java2d.x11.X11SurfaceData.isDrawableValid(Native Method)
        at sun.java2d.x11.X11SurfaceData$X11WindowSurfaceData.<init>(X11SurfaceData.java:536)
        at sun.java2d.x11.X11SurfaceData.createData(X11SurfaceData.java:355)
        at sun.awt.X11GraphicsConfig.createSurfaceData(X11GraphicsConfig.java:406)
        at sun.awt.X11.XWindow.validateSurface(XWindow.java:1066)
        at sun.awt.X11.XComponentPeer.setBounds(XComponentPeer.java:555)
        at sun.awt.X11.XTextAreaPeer.setBounds(XTextAreaPeer.java:285)
        at java.awt.Component.reshapeNativePeer(Component.java:2033)
        at java.awt.Component.reshape(Component.java:1989)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Component.setBounds(Component.java:1956)
        at java.awt.BorderLayout.layoutContainer(BorderLayout.java:813)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Container.layout(Container.java:1395)
        at java.awt.Container.doLayout(Container.java:1384)
        at java.awt.Container.validateTree(Container.java:1467)
        at java.awt.Container.validate(Container.java:1442)
        - locked <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at java.awt.Window.dispatchEventImpl(Window.java:2192)
        at java.awt.Component.dispatchEvent(Component.java:4177)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
"thread applet-FocusLostAfterTrayTest.class":
        at java.awt.Window.getGraphicsConfiguration(Window.java:2498)
        - waiting to lock <0xb011d7a0> (a java.awt.Component$AWTTreeLock)
        at sun.awt.X11.XWindow.initGraphicsConfiguration(XWindow.java:129)
        at sun.awt.X11.XWindow.preInit(XWindow.java:139)
        at sun.awt.X11.XComponentPeer.preInit(XComponentPeer.java:118)
        at sun.awt.X11.XWindowPeer.preInit(XWindowPeer.java:76)
        at sun.awt.X11.XDecoratedPeer.preInit(XDecoratedPeer.java:53)
        at sun.awt.X11.XFramePeer.preInit(XFramePeer.java:38)
        at sun.awt.X11.XEmbeddedFramePeer.preInit(XEmbeddedFramePeer.java:37)
        at sun.awt.X11.XBaseWindow.init(XBaseWindow.java:135)
        at sun.awt.X11.XBaseWindow.<init>(XBaseWindow.java:173)
        at sun.awt.X11.XWindow.<init>(XWindow.java:88)
        at sun.awt.X11.XComponentPeer.<init>(XComponentPeer.java:102)
        at sun.awt.X11.XCanvasPeer.<init>(XCanvasPeer.java:22)
        at sun.awt.X11.XPanelPeer.<init>(XPanelPeer.java:27)
        at sun.awt.X11.XWindowPeer.<init>(XWindowPeer.java:63)
        at sun.awt.X11.XDecoratedPeer.<init>(XDecoratedPeer.java:41)
        at sun.awt.X11.XFramePeer.<init>(XFramePeer.java:34)
        at sun.awt.X11.XEmbeddedFramePeer.<init>(XEmbeddedFramePeer.java:28)
        at sun.awt.X11.XToolkit.createEmbeddedFrame(XToolkit.java:846)
        at sun.awt.X11.XEmbeddedFrame.<init>(XEmbeddedFrame.java:35)
        at sun.awt.X11.XTrayIconPeer$2.<init>(XTrayIconPeer.java:65)
        at sun.awt.X11.XTrayIconPeer.<init>(XTrayIconPeer.java:61)
        at sun.awt.X11.XToolkit.createTrayIcon(XToolkit.java:873)
        at java.awt.TrayIcon.addNotify(TrayIcon.java:638)
        - locked <0xb0397e10> (a java.awt.TrayIcon)
        at java.awt.SystemTray.add(SystemTray.java:231)
        at FocusLostAfterTrayTest.start(FocusLostAfterTrayTest.java:77)
        at sun.applet.AppletPanel.run(AppletPanel.java:457)
        at java.lang.Thread.run(Thread.java:608)

Found 1 deadlock.