[DDF] Please give advice on what to do if you have an existing version of OpenJDK already installed. Example of things I am

Please give advice on what to do if you have an existing version of OpenJDK already installed. Example of things I am wondering about: Should we uninstall it first? Or should we install the newer version in a different locaton?

Reported by: kmindyorgrh

https://access.redhat.com/documentation/en-us/openjdk/8/html/installing_and_using_openjdk_8_for_windows/openjdk8-windows-installation-options#annotations:059ff2b8-bffe-43b2-83c7-951fc37c7d77