Ask HN: Suggestions for learning Java?

Hey guys, I'm starting my next semester in a week, and one of my courses is in java. It has been two years since I have taken a class that needed Java, so I no longer have my old text books.

Was looking for some good resources you guys would recommend? I just want to get familiar with the syntax again before classes start.

Any recommendations? (Even from beginners guides to good refresher books)

Thanks all.