WNPOJO is a library of Plain Old Java Objects to encapsulate WordNet entities (such as word, sense, and synset) and handle them transparently without the hassle of having to manage SQL queries. The Hibernate framework is used to handle SQL queries behind the scenes. It comes with a programming sample.
WNEJB is software to provide scalable, fault-tolerant, distributed access to the WordNet database in a Java Enterprise context. A session EJB is the favored interface for queries that return XML strings or serialized W3C documents. It is meant to be hosted on a JBoss 5 or 6 application server. It comes with a deployment wizard, an XML servlet, and a GUI browser.