Here's a very good introduction tutorial, it assumes you know nothing about programming, and more importantly, c++.

You should be able to finish it pretty quickly, and you should learn the basics.
Then you'll be able to read sun's more 'advanced'(proper usage and stuff) tutorials and understand them.

Here goes:

Introduction to Computer Science using Java
Bradley Kjell, Cental Connecticut State University

http://chortle.ccsu.edu/cs151/cs151java.html
http://www.javacommerce.com/tutorial/jbook/
http://www.bharatexpress.com/javatutorial/cs151java.html (dead)
Introduction to Computer Science using Java (a google, in case the other link goes dead)