All in all this InformIT article about XDoclet and JBoss isn't too bad. It is nearly all code, and the example is a bit boringly familiar. My biggest criticism is how eerie these sites with developers/authors in suits are. When I first started working at JBoss I dressed up a lot more than I do now. Mainly because everywhere I went the developers said "umm, can you were something less decent, it kind of creeps us out". Since then I mostly still am the most stuffed-shirtish in the room, but not to the same extent.