Struggling with Java :o

I'm starting my Computer Science course at University in September, and the programming language we develop in is, surprise surprise, Java.

Anyway, I have a few months until I start the course and I thought I'd have a shot at learning a bit of Java before then.

I've been on the books, watching tutorials and programming in my free time for about a month now, and some of the language just won't stick!

I'm fine with variables, adding, subtracting, printing on screen and all the basic stuff, but when it comes to using multiple classes and methods and objects, my head starts to spin a little.

Anyone got any tips, books, tutorials that they can suggest? Thanks!

tldr; struggling with Java, suggestions for books, tutorials etc.

Any book or tutorial that may be suggested will simply rehash the same stuff that you already don't understand and the chances of you "getting it" this time is low. How about you find a code example in a book or on the net, post it here, explain exactly what you don't understand and hopefully soemone can explain it for you.