This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Gregg, Java Transaction Processing was good. (My review is in the bunkhouse.) It's a good mix between theory and practice. It has also proven to be quite popular around the office. I can barely keep it in my cube.