Java Application Development

Need a web-based, and stand-alone Java application that demonstrates multi-party video and audio conferencing, as well as an option for switching in and out of screencasting (recording the live screen of a client, and streaming it to the other participant(s)) The client needs to work with a media-server backend. If open source servers can be used, or some quick filler, for the testing/development, that would be fine. We will need to develop our own in-house streaming server separately at a later point after the client is developed. So just an written spec of the protocol is enough for us in that regard. We are looking for functionality very similar to: <[login to view URL]> (30 day free demo available)