This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.

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.

In Java, once you set the Java array size it is fixed, and it can’t be changed. This puts Java in sharp contrast to other programming languages like JavaScript where arrays resize dynamically.

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.