update-java-alternatives -V (return code: 0)
usage: update-java-alternatives [--jre-headless] [--jre] [--plugin] [-v|--verbose]
-l|--list [<jname>]
-s|--set <jname>
-a|--auto
-h|-?|--help
update-java-alternatives --help (return code: 0)
usage: update-java-alternatives [--jre-headless] [--jre] [--plugin] [-v|--verbose]
-l|--list [<jname>]
-s|--set <jname>
-a|--auto
-h|-?|--help