Java is the program that lets you play games online with your friends, chat with people from all over the world, view images in 3D and do the boring stuff like calculate your mortgage. In short, Java is a programming language, since it is relatively new not all operating systems support. Having Java Runtime Environment installed on your computer will solve this problem and make it so you can enjoy all the great things Java has to offer.
Java Runtime Environment includes the Java Virtual Machine, components and code libraries that are needed to run all program written in Java. This program is available for your Mac, Windows and Unix OS.
A Java app for playing online games
