This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
If you dont want to see the source file insteadof class file, then go to build path of the project, expand JRE system library, now expand rt.jar-->selet source attachment then remove.
actually eclipse has some in-build functionality to show you the source when you click the corresponding classes in source files, if you attached the source to the jar.