Find out more from these links:
JavaEE
http://java.sun.com/javaee/
http://www.jcp.org/en/jsr/detail?id=244
OpenJavaEE
http://www.openjavaee.org
https://glassfish.dev.java.net
https://openjavaee.dev.java.net
https://openjavaee.dev.java.net/nonav/index.html
http://blogs.sun.com/roller/page/theaquarium - A Blog about Open Source Java EE ( formerly known J2EE), GlassFish, XML, WebServices, AJAX, SOA ......
-hyau