reverse engineering

[Nig]

Hi,
Most of our code is written in Java and C/C++.
I'm looking for tools/plugins that show paths through the code.
With javadoc I couldn't see much in the way of flows through the code
(e.g. use cases) ?
doxygen seems better in that it generates call graphs, inheritance
diagrams, etc.
Any suggestions for other tools/plugins ?
Thanks !