This is found on jdk1.2.2 build "N".

Extract the attached zip file on Win NT/98/95 Japanese.
Run JComboBoxTest.

The procedure is below;
1)Change L&F to Motif or Windows(from default "Metal") at once.
2)Select an item of combobox ---that causes "NullPointerException".

In cliciking insert or add button actions are excuted,
but selecting an item of combobox causes "NullPointerException"
The errormessage is like this:
     Exception Occurred during event dispatching
     Java.lang.NullPointerException

But the case below causes no error.
1)Keep L&F "Metal"---default.
2)Select an item of combobox ---is excuted correctly.
3)Change L&F to Motif or Windows
4)Select an item of combobox ---is excuted correctly.


Selecting a item of L&F from top to bottom in order, "Exception" can not be
found.





****Nov 9, 1999 update starts **************************************

This is reproducible in kestrel fcs_N.
The details of the NullPointerException is below;

Exception occurred during event dispatching:
java.lang.NullPointerException
        at javax.swing.plaf.basic.BasicComboBoxUI$EditorFocusListener.focusLost(
BasicComboBoxUI.java:1378)
        at java.awt.AWTEventMulticaster.focusLost(AWTEventMulticaster.java:175)
        at java.awt.Component.processFocusEvent(Component.java:3645)
        at javax.swing.JComponent.processFocusEvent(JComponent.java:2059)
        at java.awt.Component.processEvent(Component.java:3538)
        at java.awt.Container.processEvent(Container.java:1167)
        at java.awt.Component.dispatchEventImpl(Component.java:2596)
        at java.awt.Container.dispatchEventImpl(Container.java:1216)
        at java.awt.Component.dispatchEvent(Component.java:2500)
        at java.awt.LightweightDispatcher.setFocusRequest(Container.java:2056)
        at java.awt.Container.proxyRequestFocus(Container.java:1338)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Container.proxyRequestFocus(Container.java:1333)
        at java.awt.Component.requestFocus(Component.java:4177)
        at javax.swing.JComponent.grabFocus(JComponent.java:967)
        at javax.swing.JComponent.requestFocus(JComponent.java:950)
        at javax.swing.plaf.basic.BasicComboPopup.delegateFocus(BasicComboPopup.
java:794)
        at javax.swing.plaf.basic.BasicComboPopup$InvocationMouseHandler.mousePr
essed(BasicComboPopup.java:444)
        at java.awt.Component.processMouseEvent(Component.java:3715)
        at java.awt.Component.processEvent(Component.java:3547)
        at java.awt.Container.processEvent(Container.java:1167)
        at java.awt.Component.dispatchEventImpl(Component.java:2596)
        at java.awt.Container.dispatchEventImpl(Container.java:1216)
        at java.awt.Component.dispatchEvent(Component.java:2500)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2431
)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2190)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2105)
        at java.awt.Container.dispatchEventImpl(Container.java:1203)
        at java.awt.Window.dispatchEventImpl(Window.java:916)
        at java.awt.Component.dispatchEvent(Component.java:2500)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:320)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:10
7)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:97)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:88)

****Nov 9, 1999 update ends **************************************

miki.tokunaga@japan 1999-11-09

Name: apC97674 Date: 11/15/99


    This bug is reproducible on Win NT/98 English too
(not only Japanese)

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