Java Funny Questions

Can you override hashcode() and equals() in Enum?

http://sourceforge.net/projects/retroweaver

If you want to have the benefits of generics while retaining bytecode compatibility
with older virtual machines, check out http://sourceforge.net/projects/retroweaver. The
Retroweaver program rewrites class files so that they are compatible with older virtual
machines.

Refactoring of code..? what does that mean .. ?