CodeRanch is a really happening place for all things Java and beyond, found at https://coderanch.com/ - check it out.

There are lots of neat things here:

Helpful forums: https://coderanch.com/forums

A fun game to test your Java knowledge: http://www.javaranch.com/roundup.jsp

Lots of book reviews: http://www.javaranch.com/bunkhouse/books.jsp

A newsletter with lots of interesting articles: http://www.javaranch.com/journal/

Cool T-shirts: http://www.cafepress.com/javaranch/

The Cattle Drive where each assignment gets a code review: http://www.javaranch.com/java-college.jsp

A searchable FAQ section for the forums and other Java stuff: https://coderanch.com/how-to/

During BookPromotions, expert authors can be asked questions and free books are given away.