Is there an easy to integrate java-based forum software available

Integration via Hibernate, Acegi, Spring, Tiles would be superb.

From stackoverflow

• Hi, you can use JavaBB

• I like JForum See the feature list.

• Hi, simply compare them JavaBB vs JForum vs MVN Forum vs Yazd.

  My personal choice would be, however, JForum, that is far more powerful.