Beginner_Level

Bachi2000 - Free java tutorial for SCJP certification. Certification mock exams.
Beginner Java Tutorial - Brief tutorials for various components with examples.
Brewing Java: A Tutorial - By Elliotte Rusty Harold. Covers Java 1.0 from the ground up.
A gentle introduction to programming [ProgZoo] - Interactive programming tutorials in Java, C# or C++. Students enter code and have it compiled and executed from the web page.
How Stuff Works: Java - Nine-segment colorful illustrated tutorial shows how computer programs work by teaching you how to program in the Java programming language.
Introduction to Java and OO - An introduction to the Java programming language and object-oriented programming, specifically for developers interested in creating web applications.
Introduction to Programming Using Java - A free Java programming textbook by David J. Eck, available for use on-line and for downloading.
Java 101 - Learn Java Now - A series of short tutorials that introduce the reader to basic Java programming
Java 5 Tutorial - This tutorial is a summary of class notes for an introduction to java class. The text book used in the class is Java 5 Illuminated by Julie Anderson, Hervé Franceschi; Jones and Barlett Publishers (some examples used in this tutorial are modified versions of those found in the text book).
Java Game Programming Tutorial - A detailed tutorial about online games programming with Java. Some online games and links about Java.
Java Programming... From the Grounds Up - by Mark C. Reynolds.
Java-o-matic: Java Video Tutorials - A series of video tutorials that teach you the basics of Java. Includes a forum for asking programming questions.
Jurtle - A simple programming environment combined with a Java tutorial for learning to program in Java and teaching programming in Java. [Commercial]
Language Essentials Short Course - Provides introductory instruction on basics of programming language; includes curriculum and exercises.
MaddMatt86's Programming Website - Java for people who know C++.
New-to-Java(TM) Programming Center - Site from Sun, the makers of Java, targeted at getting newcomers quickly up and running with Java.
Programming WIth Mr.X, Java Tutorial - Java exercises, examples, and assignments compressed in downloadable zip files. Use these free resources to learn Java better.
Rock 'em, sock 'em Robocode - By Sing Li. Learning Java programming is more fun than ever with this advanced robot battle simulation engine.
Rock 'em, sock 'em Robocode: Round 2 - By Sing Li. Get ready to venture further into the realm of Robocode with this look at advanced robot construction and team play.
Shlurrrpp... Java - Excellent basic Java tutorial.
Stakeout - A Game based introduction to Java programming.
Take the First Step: Java Tutorials - Tutorials in the use of Java Development Tools from a developer's perspective. Coverage is currently limited to Ant and Hibernate.