Easy Java Persistence (EJP)

 http://www.easierjava.com/

EJP is a powerful and easy to use relational database persistence API for Java.EJP's main features include:

• automatic object/relational mapping (A-O/RM)
• automatic handling of all associations
• automatic persistence tracking

EJP has no need for mapping annotations or XML configuration, and there is no need to extend any classes or implement any interfaces. You truly do use your Plain Old Java Objects (POJOs). EJP is, by far, the easiest persistence API available for Java.