With the release of VisualVM as a standard part of Sun’s JDK distribution since JDK 6 Update 7, it is likely that Java developers will begin using VisualVM in situations in which they previously used ...
There's an excellent guide on VisualVM here. If you read it start to finish, you'll know more than the guy writing this wiki. While VisualVM is open, run the GUI. You must run the GUI from processing ...