To tell the true there is one very good package
java.lang.reflect
(with small help from java.lang)
I can't imagine package which could provide more
comfortable way for extracting such info.
The only problem may be: how to use it?
You can find some sample class in package:
http://prdownloads.sourceforge.net/wttools/unittestsgen-0.5.0.src.zip
And look for a file named SrcParserImpl.java
regards
Artur Hefczyc