JAXB Fluent API plugin

Hanson Char wrote a nice plugin for JAXB RI 2.0 that causes XJC to generate additional methods, which are very useful when you are building object tree in memory.

I like that it allows you to write the same code in a concise way. See the plugin page for more details. It's also worth noting that the code that uses this plugin can still run with any JAXB2 implementation.