General introduction to server side java patterns

I have been trying to summarize and document some of the server side programming/design patterns I have used while building Aspire/J2EE/XML. I am quite happy to see the idea come to fruition as it was accepted as a session at the upcoming (very soon) OSCON 2004 to be held in Portland, Oregon. The presentation covers application patterns, data access patterns, business logic patterns, presentation patterns, and http patterns. I am also documenting some of the preparatory notes I am collecting on the way.