What is a good Java library to write GPS metadata on JPEGs (in EXIF)?

Question

I have developed a Java application (Latipics) that geotags pictures with location information pulled from Google Latitude. I use an open source library called Sanselan to read/write GPS coordinates from/into JPEGs' metadata.

It works mostly great except that Apple's Preview (stock JPEG viewer in OS X) seems to misinterpret the GPS longitude reference (see issue in more details).

Anyway, I'm considering dropping Sanselan but I can't find a suitable replacement (keep in mind I need to be able to write into the metadata, not just extract)

Thanks for the help.