How do I enable open id on a Java Webapp?

Is there a simple jar that I can just drop in a web app with simple configuration to allow people to log in my app and be seen as JASS user?

I am not looking just for a library that implement the protocol, but a complete solution for simple solution integration.

From stackoverflow $pageUsers[$entry.posts[0].author].name

• this may be useful:

  http://code.google.com/p/openid4java

  From John Boker

• or pick another option from: http://wiki.openid.net/Libraries they are:

  • openid4java
  • WSO OpenID Library
  • joid
  • NetMesh InfoGrid LID
  From dlamblin