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.

Here are the most important concepts developers must know when they size Java arrays and deal with a Java array’s length: The theoretical maximum Java array size is 2,147,483,647 elements.

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.