PROBLEM - Ubuntu - Change / Switch Java version


Change Java version or Switch to an alternate Java version with multiple Java versions being installed on the machine


     sudo update-alternatives --config java

and system will show the options available ( Java versions installed on machine ) and will then present with the message -

"Press enter to keep the current choice[*], or type selection number: "

Enter the Selection # of the Java version you would like to be set and press Enter.

Confirm that the version has been changed by running
         java - version