Have you ever been working on a project, tracing through code, only to get to a point where you're inside your jvm's core class code? Probably. And you've probably noticed that the core classes don't display all that prettily in eclipse, you'll get some polished-up bytecode:Well it's pretty easy to attach some source... especially if you're using ubuntu and openjdk-6. Try this: sudo apt-get install openjdk-6-source Give it a minute to finish, then, in the...