JPA java code generation

Question

I am specifically looking for JPA code generation technique

First, what are all the project could generate JPA compliant code? (Eg. HibernateTools)

Second, I

Answer 1

Open source graphical tool to generate JPA class, visualize & modify Database, reverse engineering exiting source code and import models from existing database.

For NetBeans : http://jpamodeler.github.io/
For Eclipse : https://www.eclipse.org/webtools/dali/