Seriously, what happened? Python? I don't mean to offend anyone but why come up with this nice, huge, not to mention free, application server if all you're going to support is Python?
All this to say that the top four requested features on the Google Code site for this project are support for other languages. I can understand Google not supporting Ruby, PHP and Perl. Google doesn't have any significant history with any of these languages. Java on the other hand? I just don't get it.