FULL PRODUCT VERSION :
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Linux beowulf.netforensics.com 2.6.18-1.2257.fc5 #1 Fri Dec 15 16:06:24 EST 2006 i686 i686 i386 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
JXTable sub-classes from JTable and provides a nice popup of all the columns in the JTable. Unfortunately, when I set the HeaderValue for any of the TableColumns to anything other than "String", I get a ClassCastException from the bowels of Swing:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.netforensics.ui.views.enums.Columns cannot be cast to java.lang.String
at javax.swing.AbstractButton.setActionCommandFromAction(AbstractButton.java:1274)

Looking at the source, I see that this method casts Action.getValue() to a String - a bug, since getValue() is expected to return an Object, not a String. The simple fix is to use "toString()".


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See above - it's a simple fix.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Action.getValue(), according to the documentation, returns an Object. Therefore, AbstractButton cannot simply cast it to a String.
ACTUAL -
ClassCastException as per above description.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.netforensics.ui.views.enums.Columns cannot be cast to java.lang.String
at javax.swing.AbstractButton.setActionCommandFromAction(AbstractButton.java:1274)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
none needed - simply change the code to call toString() rather than casting it to a String.
---------- END SOURCE ----------