Hi, I have two entity classes, A and B. Entity bean A is mapped with a database table and have @id primary key. Entity bean B is mapped with another database table with @id primary key. I need to Inherit B from A. It is showing error. I am using JBoss jboss-5.0.0.Beta4 and eclipse 3.1. Please help with a sample program Thanks Binumon View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4146406#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...