jee_api_7/6/5 ( Java Platform, Enterprise Edition (Java EE) Technical Documentation)
http://docs.oracle.com/javaee/
http://docs.oracle.com/javaee/7/api/
http://docs.oracle.com/javaee/6/api/
http://docs.oracle.com/javaee/5/api/
jse8 (Java Platform, Standard Edition (Java SE) 8 )
http://docs.oracle.com/javase/8/
http://docs.oracle.com/javase/8/docs/api/index.html
http://docs.oracle.com/javase/7/docs/api/index.html
http://docs.oracle.com/javase/6/docs/api/index.html
http://docs.oracle.com/javase/1.5.0/docs/api/index.html