I want to move this interface out of ear as this Interface is actually stub of e2 and will be provided by other module. I am aware of its JNDI details so that I can perform a lookup. It cant be bundled along with my ear. e2 module owner will place it in server\all\lib directory. Since lookup is sucessful , its able to find e2 , but as these are loaded by different classloader , isAssignableFrom (algorithm) is failing. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4149162#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...