Jettison 1.0-alpha-1 is now released! Jettison is a Java StAX (streaming XML) implementation that reads and writes JSON. This allows you to transparently read/write JSON instead of XML in your applications. In conjunction with Apache CXF (incubating), this allows concurrent building of both XML and JSON web services (HTTP/REST & SOAP) with a simple configuration change.

For more information see the website and user's guide.