Java SE / EE offline syntax reference

I'm looking for a good offline java SE / EE syntax reference. Something I can install or upload on my Android tablet, or put on my Linux and Windows machines. An application or document that gives me a clean structured overview (grouped by JPA / Hibernate / JMS / EJB / Webservices / Etc ) of all syntax and annotations including good real-life and detailed code examples. I'm not looking for a manual, but I need a functional document that helps me when I code.

Does anyone know any good app or document ? (and not the JavaDoc)

Thanx