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Olin College: Interactive Programming in Java
An online textbook for teaching Computer Science using the Java programming language to students with no programming experience.
Princeton University
Programming in Java: Elements of Programming
Writing code in java can be easier than writing a paragraph. Check out these step-by-step tutorials which show how to program in the java language.
Other
Tutorials Point: Learn Java Programming
This tutorial gives a complete understanding of Java. It will take you through simple and practical approach while learning Java programming language.