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I have this classical issue: Using JavaFX 11 with OpenJDK 11 together with Eclipse IDE.

Error: JavaFX runtime components are missing, and are required to run this application

I have OpenJDK 11.0.2

dell@dell-pc:~$ java -version
openjdk version "11.0.2" 2019-01-15
OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)
dell@dell-pc:~$

And I also have JavaFX 11 SDK. By the way! I'm using Lubuntu Linux 18.10 if you wonder. enter image description here

Then I have included the .jar files from the JavaFX 11 SDK in Eclipse IDE into a library package.

enter image description here

Then I have included this library package into my JAdaptiveMPC project. enter image description here

I get no error in my code syntax, but still, I cannot compile my project. enter image description here

Do you know why? I got the same error if I import all those .jar files from Maven instead of download the JavaFX SDK and import it into a library.

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>Control</groupId>
  <artifactId>JAdaptiveMPC</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <dependencies>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx</artifactId>
        <version>13-ea+5</version>
        <type>pom</type>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-base</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-controls</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-graphics</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-swing</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-web</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-media</artifactId>
        <version>13-ea+5</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-fxml</artifactId>
        <version>13-ea+5</version>
    </dependency>
  </dependencies>
</project>

Continue

I have added this in the Run Configuration

enter image description here

And then I try to run enter image description here

Still errors.

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5
  • Duplicated of IntelliJ IDEA - Error: JavaFX runtime components are missing, and are required to run this application: If you run your project as a Java Application, you need to add the VM arguments as well. See openjfx.io/openjfx-docs/#IDE-Eclipse (non-modular from IDE). If you use Maven, see the Maven section too. Commented Apr 19, 2019 at 10:34
  • I have done that now. Still errors. I don't know why. @JoséPereda Commented Apr 19, 2019 at 11:00
  • 1
    Errors: nothing to do with JavaFX "11", but with JavaFX itself and FXML: your path to the FXML file is wrong. Just refer to the root of the resources folder, like getResources("/se/danielmartensson/controller/gui.fxml"). As an aside, code is preferred over screenshots when posting a question. Commented Apr 19, 2019 at 11:08
  • Now it's working @JoséPereda Very good. I know that code is perferred over screen shorts, but for beginners that doesn't know how to fix this issue, screen shots are more valuable than code. Commented Apr 19, 2019 at 11:23
  • Daniel, if we cannot test the code, it is quite impossible to help you. Please, do not provide in the future images with code. Commented Nov 20, 2021 at 12:56

4 Answers 4

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26

Your problem is not compiling the project, but running it. Since your main is defined in your Application-extension, running the project will require JavaFX in your module path on startup.

So either outsource your main into a class different from your Application or add the JavaFX modules with VM arguments:

--module-path="<javafx-root>\lib" --add-modules="javafx.base,javafx.controls,…"

See this for some more info.

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4 Comments

Hello! Thanks for your answer. But I have done that. Se my updated question.
@Heretic sorry, I've checked your post more carefully. You're obviously calling FXMLLoader.setLocation​(URL), but apparently your resource (\JAdaptiveMPC...\gui.fxml) cannot be found. So check if your location is correct and Main.class.getResource(...) does not return null.
@Reizo can you please explain how to: "add the JavaFX modules with VM arguments" as you stated in your answer. I'm experiencing this same issue and have been unsuccessful thus far in correcting it. Thank you
@TrixietheCat You have to pass the given arguments when launching your program with java. Usually your IDE does that under the hood and lets you configure what arguments to pass to the VM. Either see this example or look for how to specify vm arguments in Eclipse/IntelliJ/....
1

The question is old but this how it did work for me in intellij(linux) :

1- go to run -> edit configurations

2- add the path in VM Options :

--module-path yourpath/lib --add-modules javafx.controls,javafx.fxml

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1

enter image description here

In eclipse I selected this MODULE PATH option from the dropdown and it worked for me - I didnt need the vm agruments. Make sure the JavaFx Jars are added in the ModulePath under Dependencies Tab (Eclipse >> Project >> Configurations)

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-1

I was working on Eclipse. For me, running the class with the below VM arguments worked:

-p C:\<your_path>\javafx-sdk-11\lib --add-modules javafx.controls,javafx.base,javafx.fxml,javafx.graphics,javafx.media,javafx.web --add-opens=javafx.graphics/javafx.scene=ALL-UNNAMED --add-exports javafx.base/com.sun.javafx.event=ALL-UNNAMED
-Djava.library.path="C:\<your_path>\javafx-sdk-11\bin"
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