J9 and Swing

[ju doyle]

Hi,
I've installed J9 on my PDA and also Swing libraries. I'm trying to run a simple Swing program but am getting an error:
'Exception in thread main java.lang.NoClassDefFoundError: javax.Swing.Utilities'

The class javax.Swing.Utilities is actually there in the Swing libraries I've installed and my classpath is set up ok so I was wondering if anyone might know what the problem could be?

Thanks