IntelliJ - JavaFX and JavaDoc: Two versions of module

Question

I got a bit of a struggle setting up IntelliJ for a JavaFX project. I set it up using File > Project Structure > Libraries > Add new library > From Maven searching for org.openjfx:javafx-fxml:11.0.2. So it was found and I deliberately checked Download JavaDocs since this would be useful.

However, when I tried to start the project, I got the following error:

java.lang.module.FindException: Two versions of module javafx.graphics found in lib (javafx-graphics-11.0.2-linux.jar and javafx-graphics-11.0.2-javadoc.jar)

Apparently the compiler mistoke javadoc for another version...

When I then removed the *javadoc.jar files downloaded for JavaFX the program started just fine. As you can imagine, I would like to keep the possibility to read JavaDoc directly in my IDE.

Any ideas how to fix that?

Edit: Here is a sample repo at Github: leun4m/javafx-demo@2a7a03a

Run Configuration:

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

Answer 1

I managed to make to compile, run and get docs in your project by doing next:

1. Adding a pom.xml to the root:

4.0.0

<groupId>org.example</groupId>
<artifactId>java-fx-pom</artifactId>
<version>1.0-SNAPSHOT</version>

<properties>
    <java.version>1.13</java.version>
    <maven.compiler.source>13</maven.compiler.source>
    <maven.compiler.target>13</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>

<dependencies>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-controls</artifactId>
        <version>11.0.2</version>
    </dependency>
    <dependency>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-fxml</artifactId>
        <version>11.0.1</version>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-maven-plugin</artifactId>
            <version>0.0.3</version>
            <configuration>
                <mainClass>Main</mainClass>
            </configuration>
        </plugin>
    </plugins>
</build>

2. building with mvn clean install
3. running with javafx:run -f pom.xml
4. to get better docs you need to go "inside" any javafx method, you can do that by putting cursor and pressing Ctrl+B, and click on "Download Sources"
5. Finally I've created a PR to your test repository. I've intentionally pushed some idea files, that should reduce amount of errors you get.