错误：缺少 JavaFX 运行时组件 - JavaFX 11 和 OpenJDK 11 以及 Eclipse IDE

Question

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.

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

Then I have included this library package into my JAdaptiveMPC project.

I get no error in my code syntax, but still, I cannot compile my project.

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

And then I try to run

Still errors.

Answer 1

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,javafx.media,…"

See this for some more info.

Answer 2

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

Answer 3

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)

Answer 4

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"