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

jee jse api (8/7/6/5)在线资源汇总