Install Oracle java 8 on Linux Mint/Ubuntu

      open your terminal and run the following commands.

1. Add the PPA

          sudo add-apt-repository ppa:webupd8team/java

     2. Then update 

          sudo apt update

    3. Run java8 installer

          sudo apt install oracle-java8-installer

          Accept the licence agreement to proceed with installation.

       

          Finally check the java version by typing

          java -version

   

    4. To set environment variables automatically 

        sudo apt install oracle-java8-set-default