Straight and clear: It's possible to write a full duplex voice chat application over WIFI connection in java?

Maybe using something like this:

Code:
mRecordingPlayer = Manager.createPlayer("capture://audio");
mRecordingPlayer.realize();
mRecordControl = (RecordControl) mRecordingPlayer.getControl("RecordControl");
mRecordControl.setRecordStream(outputStream);
mRecordControl.startRecord();
mRecordingPlayer.start();

Looking forward to your guru's answer.
Thank you in advance.