Not immutable. +1 on making it immutable though. Been reading Goetz's book, have we? ;) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4006451#4006451 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4006451