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.

Java Random Bouncing Balls An example of using Java Swing to generate a random number of bouncing balls in a square JFrame that is scaled to a percentage of the device width and height.

The Java "Random" class lets you generate a random number for your Java apps. You use this number generator to randomize images shown in your apps.