In Java an array is a way of storing multiple items of the same type. In this quick tutorial we introduce you to the very basics.

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions.

Here's everything you need to know about Java operators and operator types, and how to use them to write expressions for your Java programs.

How to Assign Random Numbers to an Array in Java. Java has a "Random" class that lets you generate a random number you use to implement calculations in your Java source code.