Joinpoint is mainly used to identify a joinpoint. It just wraps a method, constructor etc. Invocation is used for around advice, and wraps what is contained by JoinPointBean. JoinPointBean is an internal class, and contains the interceptor chains as well as a reference to the Joinpoint. JoinPointInfo is an interface to JoinPointBean that makes it immutable, this should be used by before/after/throwing/finally advice when a reference to the JoinPointBean is needed. For example it can be used to resolve annotations, or to narrow down that a before/after/throwing/finally advice only applies to a certain kind of joinpoint. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4152068#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...