RESTful Web Services is something that cannot be handled in JAX-RPC 1.1 but
is easily done in JAX-WS 2.0. This is further helped by the way
JAX-WS 2.0 can delegate data binding to JAXB 2.0 (spec | RI).
Marc promises some more blogs on WADL and JAXB 2.0 in conjunction with JAX-WS 2.0 for
more RESTful Web Services.