Google Analytics (At least when I used it in an eCommerce site) was simply the collection of visitor data and patterns.
We used their tools to graph and do analytic analysis (Try saying that 10 times fast)
That would depend on the question, of course. If it's a question about some Java code you have, then "Java In General" would be appropriate. If it's a question about some product which was written in Java to access Google Analytics, then look for a forum about that product. Otherwise, just ask it in "Java In General" and let the moderators figure it out from there.