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?

I agree that prototype-based is a nicer model, but it happens to be SLOW AS FUCK.
http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=lisaac&lang2=javaxint