Oh, I have no doubt a very working and robust version of Java will be shipped for kickoff and I hope I didn't give an impression otherwise. My comments above were related to one issue currently going that was just an excellent example of why it hasn't been released to all the teams yet. The beta teams have already found a way to work around it while a fix is made (usually fixes come out within a day or two - that's how hard WPI and NI are working). The beta teams are already using it very successfully and it's had some really enthusiastic comments on how it works.
Specific questions about Java should be posted here:
http://forums.usfirst.org/forumdisplay.php?f=1264
They have example code posted and will be happy to get you started, plus they are the 'official' site.