A GUI application’s acceptance test is not straightforward, but, in the case of Swing GUI applications, a small scaffolding utility can automate both unit and acceptance tests.

Yes, solving this means creating yet another framework. Application framework note: It is worth mentioning that any GUI application beyond "Hello World" may need quiet a few extra things not provided ...

Take a walk on the client side with Qt Jambi -- an alternative to Swing and Java 2D for developing rich, cross-platform desktop-application interfaces.