Java is not something I usually deal with, but as I understand there's nothing wrong to have various versions of Java installed. Products, like Oracle database, for example, ship with their own version of Java included, and you most certainly do not want to replace or remove the version of Java that ships with the OS.
But you can set a java default. As I recall "alternatives --config java" is what you use to choose and set the Java default.
Thanks Dude! I went ahead and run 'sudo yum install java-11-openjdk-devel" then 'sudo alternatives --config java' When I run java --version I see I am running the 11 version.
openjdk 11.0.7 2020-04-14 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing)
I then also ran
sudo update-alternatives --remove "java" "/usr/java/jre-10.0.2/bin/java"
sudo update-alternatives --remove "java" "/usr/java/jdk-10.0.2/bin/java"
sudo rm -rf /usr/java to remove the old Java 10 version.
We'll see what happens.