Module Not Found: Javafx. Controls

Question

I have downloaded JavaFX SDK, unpacked it and set a PATH_TO_FX system variable, following this instructions. I used following code example:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class HelloFX extends Application {

    @Override
    public void start(Stage stage) {
        String javaVersion = System.getProperty("java.version");
        String javafxVersion = System.getProperty("javafx.version");
        Label l = new Label("Hello, JavaFX " + javafxVersion + ", running on Java " + javaVersion + ".");
        Scene scene = new Scene(new StackPane(l), 640, 480);
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch();
    }
}

Tried to compile it with the suggested pattern:

javac --module-path $PATH_TO_FX --add-modules javafx.controls HelloFX.java

But compiler throws an error: module not found: javafx.controls. Windows 10. Java and JavaFX versions is 11.0.1

Again: I DID ADD the line --add-modules javafx.controls

Accepted Answer

I had to also include the 'lib' directory: --module-path %PATH_TO_FX%;%PATH_TO_FX%\lib to make it compile.

Answer 2

Make sure you don't have spaces in your list of modules:

--module-path PATH_TO_JAVAFX/lib --add-modules javafx.swing,javafx.graphics,javafx.fxml,javafx.media,javafx.controls

Answer 3

I'm using gradle and below build.gralde works fine for me (org.beryx.jlink is optional to build standalone distribution).

plugins {
    id 'application'
    id 'org.openjfx.javafxplugin' version '0.0.5'
    id "org.beryx.jlink" version "2.3.0"  //optional for jlink
}

repositories {
    mavenCentral()
}

javafx {
    modules = [ 'javafx.controls' ]
}

mainClassName = 'gui.Main'

Accepted Answer

The problem was solved in 3 steps.

Use %PATH_TO_FX% instead of $PATH_TO_FX in the command line.
Recreate the variables (both system and user) PATH_TO_FX enclosing its value in quotation marks. As the directory "C:\Program Files\Java\javafx-sdk-11.0.1\" contains a space, it caused an error "invalid flag".
Rebooting the computer to update the variables.

Answer 5

As JavaFX isn't included in "default" JDK's I found the easiest fix for this kind of issues is to use the LibericaJDK (11+) from Bellsoftware which has the JavaFX included again to make it easier to develop and run JavaFX applications.

Answer 6

helloFX.bat @echo off cls set PATH_TO_FX="C:\Program Files\Java\javafx-sdk-11.0.2\lib" C: cd \development\java\javaFX

rem javac --module-path %PATH_TO_FX% --add-modules javafx.controls,javafx.fxml HelloFX.java javac --module-path %PATH_TO_FX% --add-modules javafx.controls HelloFX.java

java --module-path %PATH_TO_FX% --add-modules javafx.controls HelloFX

pause

Answer 7

When running the command

javac --module-path $PATH_TO_FX --add-modules javafx.controls HelloFX.java

instead of writing the $PATH_TO_FX or %PATH% write the path itself that is

javac --module-path C:\javafx-sdk-11.0.2\lib --add-modules javafx.controls HelloFX.java

Also try to make sure your directory doesn't have any spaces. It gave me problems, it may work for you for a directory with spaces

Answer 8

Since I use Maven, I had to modify the pom.xml file to include the dependency.
pom.xml:

<dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>13.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-media</artifactId>
            <version>11.0.2</version>
        </dependency>
</dependencies>

You may need to modify the version numbers according to what version you have installed.

Answer 9

My solution was little different from above:
javac --module-path C:\other_program\javafx-sdk-17.0.1\lib\ --add-modules javafx.controls HelloFX.java
I had to put lib in the path, and not C:\other_program\javafx-sdk-17.0.1\ together like Arilou suggestion.

To execute the compiled file, "HelloFX.class", you may include the lib path as well:
java --module-path C:\other_program\javafx-sdk-17.0.1\lib\ --add-modules javafx.controls HelloFX

Runtime environemnt:
  OS: Windows 10
  PowerShell
  Java 15.0.1
  JavaFX 17.01

Answer 10

I am using maven. I had to add this dependency.

    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-fxml</artifactId>
        <version>19-ea+2</version>
    </dependency>

Answer 11

If you are using Netbeans, its a must to uncheck "Compile on Save", unless you get this error.

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Module Not Found: Javafx. Controls

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Module Not Found: Javafx. Controls

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