UPDATED. The regularly scheduled quarterly security updates for Java on July 15 will not include updates for Windows XP, which is now formally unsupported by Oracle.

To check which version of Java you have on your Windows computer, you'll need to open the Command Prompt.

Windows only: Tiny utility JavaRa cleans up older or redundant versions of the Java Runtime Environment (JRE) that might be littering up your PC, and optionally updates to the latest version.