There are three simple ways to set JAVA_HOME in Windows. This tutorial shows you how to do it manually, from the command line and through the installer.

Right-click on the project root and select “Properties” Select “Libraries” on the left side and make sure “JDK 1.7” is selected at the Java Platform option.

The Java Runtime Environment (JRE), also known as Java Runtime, is part of the Java Development Kit (JDK), a software development environment for writing Java applications.