1) Download the file

Go to this website: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Accept the License Agreement
Click on the right product for your environment
The download should now start

2) Run the file and go through the wizard

When the download is complete, execute the file. A wizard should start.
You'll see several screens. The first one is the startup. Just click next:
The second screen gives you options. The default options are good. Just click next:
If you wish to change the folder, you can do this in the third screen:
After installation, you get a screen that tells you everything is fine. Click close:

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