Java Marine API is an NMEA 0183 library for Java.
For furher info and latest source code, see project's Github pages.
https://github.com/ktuukkan/marine-api/
A disk based production quality RTree based upon Guttmans quadratic split algorithm having following features:
Buffering with dirty write,
Index joins,
Tree Seeding,
Window and NN queries,
Runtime STR Packing capability,
Completely Thread safe.