EJBDoclet is a JavaDoc plugin (Doclet) that generates EJB related source files from an EJB bean source file that has been JavaDoc commented by using special EJBDoclet tags. EJBDoclet has retired, http://sourceforge.net/projects/xdoclet is the substitute.
The Microsoft Bytecode Engineering Library is a library written completely in Java that allows the user to parse, create, edit, and rewrite .NET assemblies. The code originally came from the University of Arizona. http://www.cs.arizona.edu/projects/mbel/