Run the attached test case with Tiger b19 viz. setComponentZOrderTest4.java*

when ZOrder of the button is incremented programmatically, IllegalArgumentException is thrown.

Exception in thread "main" java.lang.IllegalArgumentException: illegal component position
        at java.awt.Container.checkAdding(Container.java:405)
        at java.awt.Container.setComponentZOrder(Container.java:658)
        at setComponentZOrderTest4.<init>(setComponentZOrderTest4.java:41)
        at setComponentZOrderTest4.main(setComponentZOrderTest4.java:53)

this does not happen when the ZOrder of the component is decremented.

In anycase the rendering of the component for which ZOrder was changed goes haywire.

This however works properly for Swing components inside Frame or for AWT Components themselves