The best thing to do might be to give yourself a little project to do. You say you specialize in 2D game development, so why not develop a game?
Ludum Dare is this weekend: Ludum Dare
But if you're looking for a team, you might check out the JGO forum: Business and Project Discussions - Java-Gaming.org
Or you might consider getting into open-source development. Shameless self-promotion, I have a small open-source project that I'd love other people to get involved in: https://github.com/KevinWorkman/SvgExe