Oracle Java Development Kit

Java Platform, Standard Edition (Java SE) lets you develop and deploy Java applications on desktops and servers, as
well as in today's demanding embedded environments.

Where Available: Mod Lab, Phd Lab, Student Computer, RPC
Source: http://www.oracle.com/technetwork/java/javase/downloads/index.html
Cost: Free
Course: MS Business Analytics courses
Platform: Windows, Mac
Online Training: http://www.lynda.com/search?q=Java