From Googlecode’s blog:

So we’re sad to announce that we won’t be able to present at JavaOne this year. We wish that we could, but Oracle’s recent lawsuit against Google and open source has made it impossible for us to freely share our thoughts about the future of Java and open source generally.

Not surprising that Google won’t be coming. Now, I didn’t hear of anyone suing Open Source. Oh, wait: Google IS the Open Souce.