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 ...

In order to run a Java application, a JVM must load compiled .class files into a context, such as a server, where they can be accessed. A JVM depends on its class loader to perform this function.