A Technical Paper on SOA Implementations with Java EE 5 SDK
A recent technical paper on java.sun.com, Implementing Service-Oriented Architectures (SOA) with the Java EE 5 SDK, details the background concepts and describes the language constructs for developing SOA composite applications on the Java EE 5 platform. As an example, the article uses a sample app that's based on a loan-processing use caseone that includes HTTP/SOAP binding components and WS-BPEL and Java EE service engines.
Take a look! If you work with SOA implementations, the paper is well worth your time.