4.0.0 javax.persistence persistence-api 1.0 Enterprise JavaBeans (EJB) 3.0 The Enterprise JavaBeans architecture is a component architecture for the development and deployment of component-based business applications. The purpose of Enterprise JavaBeans (EJB) 3.0 is to improve the EJB architecture by reducing its complexity from the developer's point of view. http://www.jcp.org/en/jsr/detail?id=220 Common Development and Distribution License (CDDL) v1.0 http://www.sun.com/cddl/cddl.html repo maven-compiler-plugin 1.5 1.5