what to do after ap java?

I'm a senior in high school and my ap java class is nearing its end. You can look up the scope of the class here http://www.collegeboard.com/student/testing/ap/sub_compscia.html
What java book/api/website should I study when this course ends?

>>21
prototype-based OO > class-based OO
everyone realizes this except sepplesfags and javafags.