Java Marine API is an NMEA 0183 library for Java.
For furher info and latest source code, see project's Github pages.
http://github.com/ktuukkan/marine-api/
Open Source GPS Tracking System. It allows to use mobile phones with J2ME support as mobile trackers and see its tracks on Google Maps online. There is a web RESTful API for GPS data input. See details on http://redmine.wannatrak.com