Java updates are delivered through the Java frameworks installed on your computer. You don't need to download them manually as the software downloads them automatically through the built-in updates. You can access the Java updates section from the Control Panel of your computer. If you want to perform a manual update then click on the Java icon and use the "Check for updates" button and let the software download the update if it found one. Alternatively, you can go to to main website and download the Java setup which will also update the version installed on your computer.