Run Groovy at the CLI with Java 9+ module settings

OS: Linux Mint 18.3
The combo I want to run is: Groovy 3.0.+ (app and testing code) & Java 11+ & JavaFX 11+

Having had a little help (see comments here) I can now do this using a gradle.build file (including outputting an executable using the Gradle "installDist" task from the application plugin).

I've also managed to do this from a non-Gradle Groovy-enabled project in IntelliJ, by configuring the classpath and module-path appropriately.

My file javaFXTest.groovy looks like this (NB this is the Groovy script which I get IntelliJ to run):

package core

import javafx.application.Application
import javafx.fxml.FXMLLoader
import javafx.scene.Parent
import javafx.scene.Scene
import javafx.stage.Stage

Application.launch(  GrApp, args)

class GrApp extends Application {

    @Override
    void start(Stage primaryStage) {
        Parent root = FXMLLoader.load(getClass().getResource("/dialog1.fxml"))       
        primaryStage.title = "Hello World"
        primaryStage.scene = new Scene(root, 1200, 800)
        primaryStage.show()
    }
}

I'm just wondering, for the sake of interest, how this is actually done in terms of a CLI groovy command. I thought it might be something like this:

groovy -cp .:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/*  --module-path /home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib --add-modules javafx.controls,javafx.fxml core/javaFXTest.groovy 

oops:

Caught: java.io.FileNotFoundException: /home/mike/IdeaProjects/JavaFXExp2/AppTest/src/main/groovy/--module-path (/home/mike/IdeaProjects/JavaFXExp2/AppTest/src/main/groovy/--module-path)

... it clearly doesn't recognise --module-path as a configurable option, confirmed by going groovy --help. I searched on this and found nothing. And yet IntelliJ manages to run this script: the --module-path and --add-modules options are added as VM options to the run configuration. Anyone know how this might be done as a CLI command?

On the suggestion by cfrick I found the answer: Intellij does indeed show the whole command in the "Run" view (if you click the '...'):

Turns out this is a giant Java command with all sorts of stuff beyond my understanding, and inclusion of many Groovy .jars for example. I show it in its magnificence for anyone interested: I've split up into lines to show the options a bit more clearly.

/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java 
-Dgroovy.home=/home/mike/.sdkman/candidates/groovy/3.0.2 
-Dgroovy.starter.conf=/home/mike/.sdkman/candidates/groovy/3.0.2/conf/groovy-starter.conf 
-javaagent:/home/mike/.local/share/JetBrains/Toolbox/apps/IDEA-C/ch-0/201.6073.9/lib/idea_rt.jar=41350:/home/mike/.local/share/JetBrains/Toolbox/apps/IDEA-C/ch-0/201.6073.9/bin 
-Dfile.encoding=UTF-8 
-classpath /home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-3.0.2.jar org.codehaus.groovy.tools.GroovyStarter 
--conf /home/mike/.sdkman/candidates/groovy/3.0.2/conf/groovy-starter.conf 
--main groovy.ui.GroovyMain 
--classpath .:/home/mike/IdeaProjects/JavaFXExp2/out/production/AppTest:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-test-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-yaml-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-platform-launcher-1.6.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-jupiter-api-5.6.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-jupiter-engine-5.6.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-templates-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-groovysh-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jsp-api-2.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ant-1.10.7.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jackson-dataformat-yaml-2.10.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/javaparser-core-3.15.13.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-json-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ant-launcher-1.10.7.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-xml-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-testng-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-jmx-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/commons-logging-1.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-dateutil-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-4.13.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/hamcrest-core-1.3.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/xstream-1.4.11.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ivy-2.5.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-servlet-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/gpars-1.2.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jcommander-1.72.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jsr166y-1.7.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ant-antlr-1.10.7.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/multiverse-core-0.7.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-jsr223-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-sql-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-groovydoc-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/bsf-2.4.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/org.abego.treelayout.core-1.0.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jackson-core-2.10.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ST4-4.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-console-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jackson-annotations-2.10.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jansi-1.18.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-datetime-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-astbuilder-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-jaxb-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-ant-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-test-junit5-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-swing-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/qdox-1.12.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-cli-picocli-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/javax.servlet-api-3.0.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-cli-commons-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-macro-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-nio-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-platform-engine-1.6.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/junit-platform-commons-1.6.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/testng-6.14.3.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jackson-databind-2.10.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/ant-junit-1.10.7.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/opentest4j-1.2.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-bsf-3.0.2.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/commons-cli-1.4.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/snakeyaml-1.24.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/jline-2.14.6.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/groovy-docgenerator-3.0.2.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/src.zip:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx-swt.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.web.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.base.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.fxml.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.media.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.swing.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.controls.jar:/home/mike/.java/JavaFX/javafx-sdk-11.0.2/lib/javafx.graphics.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/extras-jaxb/jaxb-api-2.3.0.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/extras-jaxb/activation-1.1.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/extras-jaxb/jaxb-core-2.3.0.1.jar:/home/mike/.sdkman/candidates/groovy/3.0.2/lib/extras-jaxb/jaxb-impl-2.3.0.1.jar 

--encoding=UTF-8 
/home/mike/IdeaProjects/JavaFXExp2/AppTest/src/main/groovy/core/javaFXTest.groovy

I hazard a guess that the first -classpath option (with the single dash) is presumably setting that for the "javaagent"... or could it be for the "Groovy starter"...?

This at least solves the conundrum: I had understood that Groovy (even Groovy 3) can't handle Java 9+ modules. So it would make sense that this must be a Java command. Maybe running with a groovy commmand will become possible with Groovy 4, which as I understand it will (hopefully) be able to be able to handle these modules.