At the moment we can insert java for free using Geextractor 0.3
Get from
www.samsungseriez.com (you need to be registered for view I+D forum where you can download it) . In English section of the forum, you can see a capture image of program and how to use it.
We're working on it. Maybe next week we release 0.5 version for creating a graphic interface by us (new icons, bars, .... ) Still alpha.