Name: dm26566 Date: 10/15/98


I have a program (too large to send, but call me: x51703) that gets several of these
dumps from time to time: It usually happens when attemting to scroll a JTable.

Exception occurred during event dispatching:
java.lang.NullPointerException
        at sun.java2d.loops.RasterOutputManager.copyArea(RasterOutputManager.java:575)
        at sun.java2d.SunGraphics2D.copyArea(SunGraphics2D.java:1514)
        at javax.swing.JViewport.paint(JViewport.java:366)
        at javax.swing.JComponent.paintChildren(JComponent.java:388)
        at javax.swing.JComponent.paint(JComponent.java:550)
        at javax.swing.JComponent.paintChildren(JComponent.java:388)
        at javax.swing.JComponent.paint(JComponent.java:550)
        at javax.swing.JComponent.paintChildren(JComponent.java:388)
        at javax.swing.JComponent.paint(JComponent.java:550)
        at javax.swing.JComponent.paintChildren(JComponent.java:388)
        at javax.swing.JComponent.paint(JComponent.java:550)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:547)
        at javax.swing.JComponent.paintChildren(JComponent.java:388)
        at javax.swing.JComponent.paint(JComponent.java:535)
        at java.awt.Container.paint(Container.java:770)
        at javax.swing.JApplet.update(JApplet.java:148)
        at sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java:248)
        at java.awt.Component.dispatchEventImpl(Component.java:2429)
        at java.awt.Container.dispatchEventImpl(Container.java:1032)
        at java.awt.Component.dispatchEvent(Component.java:2289)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:258)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:68)

The offending line of code is:
/usr/build/promoted/jdk1.2/JDK1.2_fcs_N/src/share/classes/sun/java2d/loops/RasterOutputManager.java

        // If there is a forward overlap of the memory area, copy to an
        // intermediate buffer first
        if (
---> (dest2D instanceof BufferedImageGraphics2D
                && ((dx >= x) && (dx <= (x+w)) && (dy >= y) && (dy <= (y+h))))
            || dest2D.getDevID().equals("WGraphics")
        ) {

me-thinks that somehow/sometimes dest2D is not set.
(Review ID: 40527)
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