Jikes is a lot faster that Javac. Thats about it AFAIK.
I've heard that claim as well, but also that recent javac versions
have closed the performance gap. So I really don't know whether
jikes still has a performance advantage. However, I do prefer the
greater number of warnings that jikes can be configured to produce
(e.g., by adding the "+P +Pall +Pno-serial" compiler arguments).
