[gl4java-usergroup] Cannot create GL Context?

[<dom...@so...>]

I've installed J2SDK1.4.0_01 and GL4Java2.8.2.0 on my machine. It worked 
well before, but recently when I uninstalled the SDK and replaced with 
J2SDK1.4.0_03, GL4Java no longer works!
I tried to run the Java port of Nehe's lesson, and I got the messages 

getGC context could NOT be created
getGC errorcould not open a GL widget -- GL CONTEXT
can't create a GL context 

What would be the problem of this? I tried installing the SDK and GL4Java 
again, but still cannot get it running. 

Thank you! 

Dominic