Found an interesting relatively large app:
http://sourceforge.net/projects/jbilling/files/latest/download
App: 20 MB
Libs: 80 MB
Includes: Java EE, Spring, JSP, web services, Struts, Grails, Drools,
SiteMesh, Hubernate.
Also what makes it interesting that it contains quite a lot of classes
generated by Grails.
Could be a nice minefield for java stuff - decompiler, BCEL.
Wanna give it a try? :)
Ondra