Test Java versions

[ajnelson-nist]

No description provided.

[ajnelson-nist]

Ah, dear. I suppose this PR would also need to account for these lines of pom.xml:

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>18</maven.compiler.source>
    <maven.compiler.target>18</maven.compiler.target>
    <exec.mainClass>org.caseontology.examples.CASE2Geo</exec.mainClass>
  </properties>

I'm fine with pom.xml somehow pulling that from the environment, or this PR being NACKed.

[kchason]

There was a reason we needed Java 18 for one of the parts of this application. I can look into if we can downgrade it to support Java 11 and what the impacts would be. I would say, let's leave this open, but changes will be needed prior to merging.

[ajnelson-nist]

I don't think we need to force a downgrade. Could you highlight the >=18 requirement code with an inlined comment?

And meanwhile, I might just close this PR anyway if there's an issue with hard-coding the Java version in XML.