Java beginner course part 1: Hello world! Traditionally, when learning any new programming language, the first thing a tutorial should demonstrate, is how to print “Hello World!” to the screen.

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 ...

IDG Figure 1. Java class loaders in a Java program. Notice that the class search begins with the bootstrap class loader. If the class is not found, the class search returns to the extension class ...

For more on that, check out our guide to Android development for beginners. For the purposes of this Java tutorial, it may be easier to write your code directly into a Java compiler app.