There are two packages to deal with WordNet in JAVANLP:
-- jwnl.jar (javadoc: http://nlp.stanford.edu/nlp/javadoc/jwnl-docs/)
-- wn.jar (javadoc: http://nlp.stanford.edu/nlp/javadoc/wn/doc/danbikel/wordnet/package-summary.html)

How to use the wn.jar is easy and explained in what follows.

First, one has to import the package: import danbikel.wordnet.*;
Acces to the dictionary is done through a WordNet object. The dictionary version can be specified in the constructor (there are currently two versions of WordNet in JAVANLP, WordNet-1.7.1 and WordNet-2.0). So for example, you would write:

String WNHOME = "/u/nlp/lib/WordNet-2.0";
WordNet wn = new WordNet(WNHOME);

WNWord, WNIndexEntry, WNDataEntry and WNPointer are useful classes and the ones mainly used so far in the repository.

Some classes in JAVANLP using the wn.jar package:
coref.CorefDocument
coref.CorefFeatureFactory
cyc.CycPredicate
process.AntonymFinder
process.WNComboFilter
trees.WordNetInstance
wsd.supwsd.WordNetHypernyms
redwoods.pp.WordNetInterface