JAXP 1.3 is the latest release of the Java API for XML Processing. With 1.3, you get support for:
including a new Validation API (that can be configured to support RELAX NG; note to self: blog that!) and an XPath API.
But there are still projects around (including some of my own) that haven’t made the jump to Java 5.0 and that’s going to be true for a while. Almost since before JAXP 1.3 was finished, folks have been asking how they could get it, especially how they could get it for earlier releases of Java.
Now you don’t have to let an older VM hold you back from the latest JAXP! You can get an “unbundled” copy of JAXP 1.3 from java.net. You’ll be able to get it from Apache too, as soon as we clear some process hurdles.
Cool stuff, if I do say so myself. (I was one of the specification leads, so I’m not exactly unbiased.)