Configuration: JDK1.2Beta3L nightly build(March 9) under Solaris.

SwingSet Demo:
While loading text in 'progress bar' tab, changing look causes an exception. This bug is similar to bug#4063434 which was closed. However exception message is different.

I changed the looknfeel from metal to motif and got the following exception.
Loading text is stopped and I can't restart loading the text again.

java.lang.NullPointerException
        at java.awt.swing.text.View.preferenceChanged(View.java:84)
        at java.awt.swing.text.PlainView.preferenceChanged(PlainView.java:285)
        at java.awt.swing.text.PlainView.updateDamage(PlainView.java:458)
        at java.awt.swing.text.PlainView.insertUpdate(PlainView.java:391)
        at
java.awt.swing.text.DefaultTextUI$RootView.insertUpdate(DefaultTextUI.java:834)
        at
java.awt.swing.text.DefaultTextUI$UpdateHandler.insertUpdate(DefaultTextUI.java:
1050)
        at
java.awt.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:137)
        at
java.awt.swing.text.AbstractDocument.insertString(AbstractDocument.java:415)
        at java.awt.swing.JTextArea.append(JTextArea.java:353)
        at ProgressPanel$LoadThread.run(ProgressPanel.java:151)
Couldn't find X Input Context
bae-chul.kim@Eng 1998-03-09