JAdvice is an AOP framework written in Java
using Javassist.

The only docs I can find are the javadocs (which
are actually quite good). I'd love to give
it a try, but can someone point me at an example of its usage? If this is a “you need to be a real man and read the
code” I'm usually up for that too, but I just want to be sure I'm not missing anything.