Believe me: nothing could be further from the truth than this statement in
the Swing article:

"I find it hard to believe that Swing cannot exceed performance requirements
for the vast majority of applications. In my experience, Swing performance
is more than adequate—it is the supporting code and architecture that is
lacking." Best start "believing" Bradley, unless you're thinking there's
a huge market out there for a "Hello World" app.

Swing delivers such HUGE files to the client for any application of minimal
sophistication and complexity, that it renders it virtually unusable. We
know. We based an entire application suite on it and dropped it like a hot
potato when the "hardware advances" didn't make a dent in the pitiful performance.
We are absolutely cooking with our replacement COM/ASP architecture.

Stay away from Swing.......you'll be doing yourself a big big favor.