Qdox quickly parses java source files looking for key items of interest:
* class and interface definitions
* member declarations
* import statements
* javadoc comments
qdox ignores all other components of java source, such as actual method implementations, to avoid overhead. qdox returns a simple document model containing only the declarations and containing enough information to be useful.

this is version 2 of qdox which is backwards incompatible with earlier versions.