FULL PRODUCT VERSION :
jdk1.6.0_12

ADDITIONAL OS VERSION INFORMATION :
WinXP 64bit

EXTRA RELEVANT SYSTEM CONFIGURATION :
nothing special

A DESCRIPTION OF THE PROBLEM :
Getting a ClassCastException on SynthArrowButton.getPreferredSize:

Exception in thread "AWT-EventQueue-1" java.lang.ClassCastException: javax.swing.plaf.synth.SynthSplitPaneDivider cannot be cast to javax.swing.JComponent
at javax.swing.plaf.synth.SynthArrowButton$SynthArrowButtonUI.getPreferredSize(SynthArrowButton.java:103)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Hava a splitbane with arrowbuttons (synth look and feel), call getPreferredSize on arrowbutton

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
i expect the preferredSize
ACTUAL -
I saw a ClassCastException

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "AWT-EventQueue-1" java.lang.ClassCastException: javax.swing.plaf.synth.SynthSplitPaneDivider cannot be cast to javax.swing.JComponent
at javax.swing.plaf.synth.SynthArrowButton$SynthArrowButtonUI.getPreferredSize(SynthArrowButton.java:103)

REPRODUCIBILITY :
This bug can be reproduced always.