The Exolab Group has released Castor 1.0.2, an open source (BSD license) data binding tool for XML and Java. Castor can marshal and unmarshal XML documents into Java objects, and store those objects in SQL databases. Automatic generation of Java classes from W3C XML schema language schema is supported, though that doesn't seem to be required. New features in 1.0.2 include generation of Java 5 code.