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

Need to add multiple values to a key in a Java HashMap but can't figure out how to do it? Here are three examples of how to solve the multiple values per key problem in Java.

This post explains how to use variables in Java. Learn the primitive types (and what that means) and just why variables are so important for any coding!

Array Class (Java 17) length - returns the size of an array in terms of its total capacity to hold elements Code example to find the Java array size Here is a simple example of how to find the length ...

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.

Spacing of Output in Java. Java programs without a graphical user interface use a computer's command line to interact with the user. It is vital that the program's command line output is properly ...