The use of JavaFX is currently limited to JDK8 because of difficulty of loading the >=JDK9 modules of JavaFX in the jrt:// filesystem, from which they are loaded into NetRexx. Apparently, --module-path and --add-modules do not work as expected. As JavaFX is the first serious use of modules outside of the JDK distribution, the problem only rears its head here. (Thanks Terry!)
The use of JavaFX is currently limited to JDK8 because of difficulty of loading the >=JDK9 modules of JavaFX in the jrt:// filesystem, from which they are loaded into NetRexx. Apparently, --module-path and --add-modules do not work as expected. As JavaFX is the first serious use of modules outside of the JDK distribution, the problem only rears its head here. (Thanks Terry!)