Java installation

I downloaded java from the oracle site,the latest version of java.After following all the steps in this video given for the installation, when I am writing javac in the command prompt to check whether it has been installed or not,it is showing error.

Probably you haven’t added Java to the environment variables. Follow the steps here to resolve the issue:-
https://www.cs.unm.edu/~ralovato/cs251/java-path-windows.html

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