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.
I don't think what happens with the servlet source and class files that are created while translating a JSP is specified anywhere - it's up to the servlet engine how to do this. Tomcat stores those in the "work" directory inside of its installation directory.