java2Demo throws NullPointerException on WinNT, Win2000 when the command prompt
in which it is running, is pushed to the full screen mode. I am also getting
Dr.Watson error on WinNT along with this exception and java process gets
 terminated automatically. On Win2000 also, java process is terminated by
windows saying that it has performed an illegal operation. I noticed this bug
only on merlin-beta build-61, 62. On Win 98, it is passing.
Here is the exception :

java.lang.NullPointerException
at sun.awt.windows.Win32OffScreenImage.restoreContents(Win32OffScreenImage.java:125 at sun.awt.image.BufImgSurfaceData.getReplacement(BufImgSurfaceData.java
:338)
at sun.java2d.SunGraphics2D.renderSurfaceData(SunGraphics2D.java:2908)
at sun.java2d.SunGraphics2D.clipAndRenderSurfaceData(SunGraphics2D.java:
2949)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3258)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3490)
at java2d.Intro$Surface.paint(Intro.java:309)
at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4594)
at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4547)
at javax.swing.JComponent._paintImmediately(JComponent.java:4497)
at javax.swing.JComponent.paintImmediately(JComponent.java:4329)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:407)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System
EventQueueUtilities.java:120)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:167)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:437)
at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:15
0)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)

To reproduce this failure,
set the path to the latest jdk. Goto the Java2D dir located under demo and
give the following command

java -jar Java2Demo.jar
Give the focus to the command prompt by clicking it and press ALT+ENTER.
If you get the above exception, then the bug is reproduced.