This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
The rules for locating class files are all very carefully spelled out in the servlet 2.2 API. Earlier versions of the api allowed servlet container vendors to make up their own scheme, but now Sun nails it all down. Download the servlet 2.2 API from java.sun.com Bill