And so it functions, ROS Java Core, on a Raspberry Pi. Heres a thing: I wondered why old Goog had the source for Apache XmlRpc in the ROS Java project and now I know, its because the current apache distro is broken as far as correctly loading the handlers of which XmlRpc is all about. Commons and client are fine, but you must use the XmlRpc Server build in the project. But yeah, its working! I'll put up repos soon but I'm having too much fun trying to break it now.