It would have take time travel for me to include anything about SUN's new packaging of XML goodies (JAXP, JAXM, JAXR, JAX-RPC). I am in the middle of writing a proposal to write that book.
However, the examples in the book all use the JAXP parser, which is quite stable now.
My chapters on SOAP messaging (as opposed to HTTP and RPC) use JMS -
Java Message Service, JavaSpaces and Java Mail - all Sun APIs.
Bill