FULL PRODUCT VERSION :
java version "1.4.2_10"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_10-b03)
Java HotSpot(TM) Client VM (build 1.4.2_10-b03, mixed mode)

According to the forum thread, this behavior also occurs on 5.0u6.


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]
(Note: Windows 2000 is NOT in the combo box list 'Operating Systems' one page before)
Microsoft Windows XP

A DESCRIPTION OF THE PROBLEM :
In some cases scrolling with keyboard key does not work in JScrollPane
and the reason is not clear.

For further details see 'Steps to Reproduce'

I also started a thread in the developer forum:
'ScrollDemo vs. ScrollDemo2: scrolling using keyboard keys'gth
http://forum.java.sun.com/thread.jspa?threadID=690432

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Start ScrollDemo and ScrollDemo2 from the Swing tutorial on Sun's Java Website:
http://java.sun.com/docs/books/tutorial/uiswing/components/example-1dot4/index.html#ScrollDemo

ScrollDemo: Keyboard navigation works
ScrollDemo2: Keyboard navigation does not work

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expect that scrolling in JScrollPanes is possible by typing (operating
system depended) keyboard keys, e.g. LEFT key to scroll left.


REPRODUCIBILITY :
This bug can be reproduced often.

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see 'Steps to Reproduce'
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