Servlet 2.4 and JSP 2.0 in practice

If you want to try out the new features in the Servlet 2.4 and JSP 2.0 specifications,
 a place to start is Bruce W. Perry's article 
 Six Cool New JSP and Servlet Features.

• Using a servlet as the welcome file
• Mapping a filter to RequestDispatchers
• Using ServletRequestListener and ServletRequestAttributeListener
• Using Expression Language (EL)
• A tag files example
• An example of a custom Expression Language function