Null pointer in DrawingFlusher.setProtectedFrame

Subject: Null pointer in DrawingFlusher.setProtectedFrame
From: email@hidden
Date: Wed, 30 Apr 2003 11:51:15 -0700 (PDT)

A customer is reporting that when running our application on OS X
(under 1.3.1), he experiences frequent crashes and parts of the window
going blank. The following exception is being repeatedly written to the
console:

Exception occurred during event dispatching:
java.lang.NullPointerException
at
com.apple.mrj.internal.awt.graphics.DrawingFlusher.setProtectedFrame(DrawingFlusher.java:378)
at
com.apple.mrj.internal.awt.graphics.MacCompPeerGraphicsConfig.beginPainting(MacCompPeerGraphicsConfig.java:264)
at
com.apple.mrj.internal.awt.basepeers.SimpleComponentPeer.beginPainting(SimpleComponentPeer.java:865)
at
com.apple.mrj.internal.awt.basepeers.SimpleComponentPeer.handlePaintEvent(SimpleComponentPeer.java:358)
at
com.apple.mrj.internal.awt.basepeers.EventHandlingComponentPeer.handleEvent(EventHandlingComponentPeer.java:486)
at java.awt.Component.dispatchEventImpl(Component.java:2659)
at java.awt.Container.dispatchEventImpl(Container.java:1208)
at java.awt.Component.dispatchEvent(Component.java:2493)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:334)
at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:126)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:88)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:80)

Notice that the stack trace consists entirely of java.* and
com.apple.* classes - none of our own code is mentioned anywhere. I've
never seen this happen myself, and I have no idea how to reproduce it,
much less track down the problem.
Does anyone have an idea what might be causing this?

Thanks!

Peter
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References:
	>Re: Finding JAR File Home (From: Greg Guerin <email@hidden>)

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