Click the Windows "Start" button and click the "Control Panel."
Double-click "Add or Remove Programs" to open the programs window. Scroll through and click "Java." Click "Change/Remove" to uninstall it from your computer. If there are other Java versions in the programs window, uninstall them as well.
Go to the Java download page and click "Free Java Download."
Click "Save" and download the installation file on your computer. Double-click the Java installation file after it has been downloaded and click "Run." Click "Install" to install the program on your computer.