JWSDP (Java Web Services Developer Pack). A free bundle of goodies you
can download from Sun that lets you set up a Servlet engine on your own machine. It
includes Apache Tomcat, Ant, JSF, JAXP, JAXR, JAX-RPC, JSTL,
and SAAJ. You install it, with a few clicks,
start it and it comes up running a number of examples with source code side by side.
It administers with a web browser. It is very polished.