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A Java interface to SWI Prolog is available using JPL.

JPL is a bidirectional interface between Java and Prolog. JPL is integrated into the full SWI-Prolog distribution starting with SWIPL version 5.4.x and rebuilt with SWIPL version 7.4.x.

Development repository can be found in SWI-Prolog/packages-jpl.

Documentation can be found at [jpl7.org][(http://jpl7.org/).

Examples are included in tqhe directory doc/packages/examples/jpl relative to the installation directory. These examples include embedding Prolog in Java as well as the other way around.

JPL was originally designed by Fred Dushin and Paul Singleton.