Java 8 (gradle) 中的 JavaFx "--add-module"

Question

I try to get a working distribution of my Intellij- JavaFX- Project. In my gradle file I have:

compileJava {
    doFirst {
        options.compilerArgs = [
                '--module-path', classpath.asPath,
                '--add-modules', 'javafx.controls,javafx.fxml,javafx.graphics,javafx.media'
        ]
        println options.compilerArgs
    }
    sourceCompatibility = '1.8'
    targetCompatibility = '1.8'
}

I added the targetCompatibility because when normal user install Java, they get Java 8. But when I try to build the program now, I get

Cause: error: option --add-modules not allowed with target 8

How can I add the javaFX modules without switching to Java 1.9?

Answer 1

Modules do not exist in Java 8. They were introduced in Java 9. And in Java 8, you don't need to add anything; JavaFX is part of regular Java SE 8. So your entire doFirst block is not needed.