Is there anything that will index java source, but also include information from the compiled bytecode?

Question

I need to search a large code base, and I'd like to get results to searches like:

'Which classes call method X()'
and
'Give me the concrete implementers of interface Y'

The kind of handy stuff you can do in eclipse, but which unfortunately isn't practice for me.

I was thinking of using solr and possibly adding semantic information using BCEL or similar, but it seems like this should exist already?