Steps to Reproduce:

1) Run SwingSet2 demo on Win2000 system
2) The SwingSet2 window has Java L&F by default.
3) Goto ProgressBar Demo and click the 'Start Loading Text' button
4) While the text is loading, change the L&F to 'Windows Style Look & Feel'
The following exception is thrown:

java.lang.NullPointerException
        at javax.swing.text.PlainView.viewToModel(PlainView.java:359)
        at javax.swing.plaf.basic.BasicTextUI$RootView.viewToModel(BasicTextUI.j
ava:1351)
        at javax.swing.plaf.basic.BasicTextUI.viewToModel(BasicTextUI.java:904)
        at javax.swing.text.DefaultCaret.positionCaret(DefaultCaret.java:214)
        at javax.swing.text.DefaultCaret.adjustCaretAndFocus(DefaultCaret.java:3
27)
        at javax.swing.text.DefaultCaret.mouseClicked(DefaultCaret.java:287)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:21
1)
        at java.awt.Component.processMouseEvent(Component.java:4865)
        at java.awt.Component.processEvent(Component.java:4688)
        at java.awt.Container.processEvent(Container.java:1299)
        at java.awt.Component.dispatchEventImpl(Component.java:3460)
        at java.awt.Container.dispatchEventImpl(Container.java:1361)
        at java.awt.Component.dispatchEvent(Component.java:3327)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3175
)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2899)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2845)
        at java.awt.Container.dispatchEventImpl(Container.java:1335)
        at java.awt.Window.dispatchEventImpl(Window.java:1338)
        at java.awt.Component.dispatchEvent(Component.java:3327)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:437)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:14
0)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:126)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:121)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)


I noticed that this problem started in Merlinb42.

java -version gives

java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b51)
Java HotSpot(TM) Client VM (build B51, mixed mode)


ruchika.mehdiratta@Eng 2001-02-09