Generate JPA 2 Entities from existing Database

Question

How can I generate JPA2 compliant @Entity from existing Databases?.

I found this: Question

Still its not clear if JBoss will generate compliant JPA2 and also

Answer 1

Eclipse provides this function for some time now (origination from Dali, included since Kepler version). Just right-click on your JPA project -> JPA Tools -> Generate Entities from Tables: