This free tutorial is a rundown of the basics of Java syntax, comments, variables, loops, arrays and more. You’ll be able to practice basic Java exercises and take quizzes to test your knowledge.

Why does Java's standard class library contain empty interfaces like Cloneable and Serializable? Find out why in this sixth installment in the "Object-oriented language basics" series. You'll also ...

This tutorial is an introduction to socket programming in Java, starting with a simple client-server example demonstrating the basic features of Java I/O. You’ll be introduced to both the ...

Java's default constructor lets developers create instances of classes when an explicitly defined constructor does not exist. Here's how it works.

Which version of Java should you use in Linux? Learn how to easily switch between different versions with a tutorial from Jack Wallen.