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Null pointer exception.....

 
Prashanth Sivarajan
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Posts: 7
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I get the following exception when a JFrame is opened with a number of text boxes and combboxes.....

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.JComponent._paintImmediately(JComponent.java:5085)
at javax.swing.JComponent.paintImmediately(JComponent.java:4880)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:723)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:679)
at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:659)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
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)


I can't post the actual code of the JFrame....the application runs in Solaris. Please let me know if anyone else faced this problem and if there is any solution.
 
Maneesh Godbole
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Originally posted by Prashanth Sivarajan:
I get the following exception when a JFrame is opened with a number of text boxes and combboxes.....

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.JComponent._paintImmediately(JComponent.java:5085)


Difficult to say much based on this.
Are you using SwingUtilities.invokeLater()?
 
Prashanth Sivarajan
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Posts: 7
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yes if the thread that invokes the code is not evenDispatchThread I use the invokeLater()
 
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