An Introduction to StAX (O'Reilly)
Now it's a year later, and I am very pleased to report that the next generation API is here. BEA Systems, working in conjunction with Sun, XMLPULL developers Stefan Haustein and Aleksandr Slominski, XML heavyweight James Clark, and others in the Java Community Process are on the verge of releasing StAX, the Streaming API for XML. StAX is a pull parsing API for XML which avoids most of the pitfalls I noted in XMLPULL. XMLPULL was a nice proof of concept. StAX is suitable for real work."