RioComAPI
RioComAPI is a java library that can be used to communicate with a RoboRio or any RIO device that uses the 2015 communications protocol. The API has not been properly tested since I don't have access to a RoboRio but minimal tests have been performed. A full javadoc is available here https://github.com/raystubbs/RioComAPI/tree/master/RioComAPI/doc, and the code is here https://github.com/raystubbs/RioComAPI/tree/master/RioComAPI/src/com/litlebot/rioapi/proto2015. The repo itself is an eclipse project so you should be able to download it and import into eclipse to build and test.
This project is no longer active, if you'd like to take it over please do.