Windows set environment variable JAVA_HOME

If you need to set an environment variable in Windows, follow these simple steps:

1. Right click on My computer (or This PC in case of Windows 10) .
2. In the window that appears, click Advanced system settings.
3. In the window that appears, click Environment Variables.
4. In the lower screen called System variables, click New 
5. In the window that appears, fill Variable name with 'JAVA_HOME' (for this example) and Variable value with the full path to the JDK that you downloaded eg: 'C:\Program Files\Java\jdk1.8.0_45'.