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

Possible duplicate of [Module javafx.controls not found in Java 9](https://stackoverflow.com/questions/46349773/module-javafx-controls-not-found-in-java-9) — amin saffar, Jan 05 '19 at 22:09
Downloading and unpacking the JavaFX files (https://gluonhq.com/products/javafx/) worked for me. I have the following VM options: `--add-exports=javafx.base/com.sun.javafx.reflect=ALL-UNNAMED --add-exports=javafx.graphics/com.sun.javafx.util=ALL-UNNAMED --module-path /opt/javafx-sdk-11.0.2/lib/ --add-modules=javafx.controls,javafx.media,javafx.fxml` — , Jul 11 '19 at 19:44

score 10 · Answer 1 · answered Mar 03 '20 at 14:37

10

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

answered Mar 03 '20 at 14:37

Arilou

99
1
5

Thank you! On the Mac I had to adjust slightly: `--module-path $PATH_TO_FX:$PATH_TO_FX/lib` – Krishen Greenwell Mar 16 '22 at 20:50

score 4 · Answer 2 · answered Jun 05 '20 at 15:27

4

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

answered Jun 05 '20 at 15:27

Nikolay Frick

2,145
22
17

score 3 · Answer 3 · answered Jan 07 '19 at 07:14

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'

score 3 · Accepted Answer · answered Jan 08 '19 at 17:38

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.

score 2 · Answer 5 · answered Aug 31 '21 at 16:43

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.

Might need to add `javax-web` dependency also in `pom.xml` in the same way. — JariK, Feb 03 '23 at 12:04

score 1 · Answer 6 · answered Sep 27 '19 at 13:58

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.

https://bell-sw.com/pages/java-11.0.4/

score 0 · Answer 7 · answered Nov 05 '20 at 07:22

0

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

answered Nov 05 '20 at 07:22

Ion Stefanache

147
1
4

Would you add some expression? It is actually hard to follow with only command line example, thanks. – Cloud Cho Dec 22 '21 at 23:15

score 0 · Answer 8 · edited Apr 26 '21 at 14:04

0

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

edited Apr 26 '21 at 14:04

r_goyal

1,117
1
11
20

answered Apr 26 '21 at 09:48

Seiden

19
2

can we run that javac under netbeans configuration anyway? @r_goyal? – gumuruh May 19 '22 at 15:39

Cloud Cho · Answer 9 · 2021-12-23T00:27:12.897

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

score 0 · Answer 10 · answered Feb 22 '22 at 19:57

0

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>

answered Feb 22 '22 at 19:57

Anders B

3,343
1
26
17

Joe · Answer 11 · 2023-03-08T01:42:45.357

Follow these steps:

Download and install the JavaFX SDK from the official OpenJFX website: https://openjfx.io/
In IntelliJ, open your project and go to File > Project Structure.
Select "Modules" from the left-hand side and then click the "+" button to add a new module.
Select "JARs or directories" and browse to the "lib" folder in your JavaFX SDK installation directory.
Select all the JAR files in the "lib" folder and click "OK".
IntelliJ will now add the JAR files to your project's classpath.

This should do the job....This is for IntelliJ but this works for other IDEs as well or at least in a similar way..

score -1 · Answer 12 · answered Sep 21 '20 at 07:49

-1

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

https://github.com/openjfx/openjfx-docs/issues/91#issuecomment-537354974

If you want a screenshot

https://github.com/openjfx/openjfx-docs/issues/120#issuecomment-692805305

answered Sep 21 '20 at 07:49

Kishore

1
2

Please add explanation to your answer instead of just providing links – kk. Sep 21 '20 at 08:39

Module not found: javafx.controls

12 Answers12

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