error message


    Feb 21 2008 | 3:55 pm
    Since I installed Leopard, I keep getting this error message:
    Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at
    apple
    .awt.CGraphicsEnvironment.displayChanged(CGraphicsEnvironment.java:65)
    at apple.awt.CToolkit$4.run(CToolkit.java:1259)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
    at
    java
    .awt
    .EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:
    269)
    at
    java
    .awt
    .EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:
    190)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:
    184)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:
    176)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
    Does anyone know what may be causing it?
    Georg
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    e-mail: georg.hajdu@hfmt-hamburg.de
    e-mail: georghajdu@mac.com
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    • Jun 29 2009 | 8:36 am
      I also get this message every now and then, but it only started 1 or 2 weeks ago. Is it possible that this has to do with the recent mac os x java update? when it has occured once it will reoccur when minimizing, or maximizing any window (even non-max window like firefox)
      os x v10.5.7
      2.5Ghz Intel Core 2 Duo
      java version "1.5.0_19"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_19-b02-304)
      Java HotSpot(TM) Client VM (build 1.5.0_19-137, mixed mode, sharing)
      here is the full error:
      Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
      at apple.awt.CGraphicsEnvironment.resetDisplays(CGraphicsEnvironment.java:99)
      at apple.awt.CGraphicsEnvironment.displayChanged(CGraphicsEnvironment.java:49)
      at apple.awt.CToolkit$4.run(CToolkit.java:1310)
      at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
      at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
      at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
      at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)