To be completely updated as of 11-01-07, you will need to download the JDK 6 update 3 version that includes Java SE (JDK) and Java Runtime Environment (JRE).
Download it and follow the installation instructions
Download it and follow the installation instructions
This is a free download for the java files needed on your computer to develop and run java code.
From Sun Microsystems web page, the description of the files that you should download is below:
