As far as I know, the source code for J2EE Web Services has not been released by Addison-Wesley. The best you can do is to write an email to Richard Monson-Haefel and ask him whether there is a way to get the code somehow...
Does it matter? I don't think we need the book samples. Anyway monson haefel dot com used to have some link for it earlier I think. In my opinion, best thing is to code using hand and play with them if you need to pass the exam
I want my playground back. Here, I'll give you this tiny ad for it: