Here are the three easiest ways to fix Java’s “not recognized as an internal or external command” error: Install or reinstall Java and the JDK on your computer Add Java’s bin directory to the computer ...

1] Run the Microsoft Utility to fix the corrupted registry keys As described above in this article, corrupted Microsoft Registry Keys is one of the causes of the “Java update did not complete ...

The Java virtual machine manages application memory and provides a portable execution environment for Java-based applications.