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.
Chu I'm not an expert with the tomcat config files but from what I know the Resource tag specifies a resource to be stored/available from a JNDI lookup. Just like in RMI, the type of the object returned is the type of the interface that the object implements. hope that helps