There was finally a vision tracking demo released for Java including updates with a new class and a convex hull operation to help all of us Java users who have been struggling with the vision tracking. Here’s the link: http://firstforge.wpi.edu/sf/frs/do/viewRelease/projects.wpilib/frs.2012_java_update_for_frc.2012_frc_update_netbeans_modules
I hope this really helps. It is really helping us right now. 
