Windows XP

Download and install JDK 6.0:

1. Go to java.sun.com
2. In the banner at the top of the page, mouse over "Downloads" and select "Java SE" (Java Standard Edition)
3. Scroll down to the most recent update of JDK 6.0 without extras and click the "Download" button
4. Select your platform and review the license agreement then agree and click "Continue"
5. Under "Available Files" click on the link to the installer (do not use the Sun Download Manager)
6. After the download is complete, run the installer, using all of the standard default options.

Put jdk1.6 in your dos command path:

1. Right click on the "My Computer" icon on your desktop and choose "Properties".
2. Skip this step if you are not running Windows Vista. Click on "Advanced system settings" on the left "Tasks" bar.
3. Under the "Advanced" tab click the "Environment Variables" buttons.
4. Look in the System Variables section and find the Path Variable.
5. Click edit, and look for "c:\Program Files\Java\bin". If it is there, change it to be "c:\Program Files\Java\jdk1.6.0_27\bin". Otherwise add";c:\Program Files\Java\jdk1.6.0_27\bin" to the end of the list or whatever version you downloaded.

To test your installation:

1. Open a command prompt by clicking on "Run" in the "Start Menu".
2. Type in the command "cmd", and press "Ok". This should open a new window.
3. In the new window, type "javac -version", then press return; you should see your current version at the top of the listing.

Mac OSX

Insert your Mac OS X Install Disk 2 into your computer and navigate to "Xcode Tools" then "Packages" and double click on "JavaSDK.pkg" to install Java. You should run Software Updates after this to make sure that Java is up to date.