JAVA_HOME is an operating system (OS) environment variable which can optionally be set after either the Java Development Kit (JDK) or the Java Runtime Environment (JRE) is installed. The JAVA_HOME ...

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 ...

Add or Remove Programs entry for Java 2 Runtime Environment, SE v1.4.2. Java SE consists of a virtual machine, which must be used to run Java programs, together with a set of libraries (or "packages") ...