Set the environment variables for Java in Windows

Set the environment variables for Java in Windows

Most of the people facing problem in setting java classpath while starting java programming. Please follow the steps to set required environment variables for java.

1

•   Download and install JDK 8 from Oracle ( http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html  )
•    Go to "My Computer" properties by Right Click
•     Click on "Advanced system settings"
•    Click on "Environment variables"
•    Click on new tab of System variable

OR

 Just search env in the search bar, It will open System properties window for you.

You need to define below System variables and its path.

• JAVA_HOME : C:\Program Files\Java\jdk1.8.0_152
• JDK_HOME : %JAVA_HOME%
• JRE_HOME : %JAVA_HOME%\jre
• CLASSPATH : .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib
• PATH : your-unique-entries;%JAVA_HOME%\bin

To Verify:

i.                 Open command prompt by typing cmd in the search bar.

ii.               Type command (java –version )

Expected output:

If you were planning to upgrade/downgrade JDK, then you need to change only

Variable (JAVA_HOME) as all other environment variables are derived from the "root" environment variable JAVA_HOME.