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java.lang.Exception: Stack trace

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Stefano L.

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Oct 14, 2003, 6:10:45 AM10/14/03
to
Ciao a tutti.

Un mio programma da' talvolta questo errore durante la chiusura anche se
sembra che tutto proceda regolarmente.

La cosa sembra del tutto casuale e non correlata a un punto preciso del
programma.

Come posso capire la classe, il metodo, l'istruzione che causano l'errore ?


java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1064)
at javax.swing.SwingGraphics.createSwingGraphics(SwingGraphics.java:147)
at javax.swing.JComponent._paintImmediately(JComponent.java:4677)
at javax.swing.JComponent.paintImmediately(JComponent.java:4495)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run
(SystemEventQueueUtilities.java:117)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
java.lang.NullPointerException
at javax.swing.JComponent._paintImmediately(JComponent.java:4678)
at javax.swing.JComponent.paintImmediately(JComponent.java:4495)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run
(SystemEventQueueUtilities.java:117)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
In paintImmediately null graphics

Stefano L.

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