Background
 
According to these links, Optional Package Versioning is supported:
https://docs.oracle.com/javase/8/docs/technotes/guides/extensions/extensions.html
https://docs.oracle.com/javase/8/docs/technotes/guides/extensions/versioning.html
 
However, in my test, there is no version check for Optional Packages.

Questions
 
a) Is Optional Package Versioning Check supported for Standalone Java
Programs (the link seems to indicate support for Java Applets)
 
b) Are there additional flags that I need to set in the Java Command Line?