What does Java platform actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The compiled program can be cached in the computer for reuse. Microsoft had its own Java Virtual Machine (JVM) for several years, but terminated support at the end of 2007.

Millions of computer users who run the most recent versions of Oracle's Java software should disable it owing to security flaws, says the cybersecurity section of the Department of Homeland Security.

Go to Java's "Verify Java Version" web page. 2. Click on the "Verify Java version" button to check which version of Java your computer currently has installed and whether or not you need to update it.