we have just released a new update which keeps the Java API in synch with the latest Actionscript 3 fixes.
The update provides the following fixes:
[FIXED] Now unlimited BlueBox messages can be send at a time
[FIXED] On room list update the room list is merged so the behavior is consistent with the one in the AS3 API
You can download the update from: http://www.smartfoxserver.com/labs/API/