Home > database >  Start a JavaFX application with maven and Java 17
Start a JavaFX application with maven and Java 17

Time:10-28

My System:

  • Has multiple jdks (1.8, 16, 17)
  • Has IntelliJ's Maven
  • Is a windows 10 machine

I want to start my JavaFX app with maven. For that I use the javafx:run button inside of the Plugins menu.

Then I get errors about my jdk, being on a too-low-level (It's telling me I try to execute my Main method with my jdk-8), which is not true, as every single jdk-specification is set to jdk-17.

Please don't send me any links about other posts. I have already tried those and the steps there did not work out for me.

This is the error I get

  • Main has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0

    • Yes I already tried to change IntelliJs jdks, the JAVA_HOME variable and the run configs of maven itself
  • Sometimes I also get an error from maven, telling me there is no JavaFX version 17 in the maven repository (but the maven repo of my workplace). Is there a way to change my maven-repo to the default maven website?

This is my pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>groupId</groupId>
    <artifactId>M226a_miniproject</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>17</release>
                    <verbose>true</verbose>
                    <fork>true</fork>
                    <executable>C:/Users/[user.name]/.jdks/openjdk-17/bin/javac</executable>
                    <compilerVersion>1.3</compilerVersion>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.8</version>
                <configuration>
                    <mainClass>ch.package.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
        </dependency>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.8.1</version>
        </dependency>

        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-junit-jupiter</artifactId>
            <version>4.0.0</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.22</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.openjfx/javafx -->
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx</artifactId>
            <version>17.0.0.1</version>
            <type>pom</type>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.openjfx/javafx-graphics -->
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-graphics</artifactId>
            <version>17.0.0.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.openjfx/javafx-fxml -->
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>17.0.0.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.openjfx/javafx-controls -->
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>17.0.0.1</version>
        </dependency>
    </dependencies>
</project>

Maybe somethings wrong with the <version>0.0.8</version> in the second plugin?
Also: The error about the JRE not recognizing the class file does make zero sense, as even my maven is using a custom path to my jdk-17.

Edit: Updated pom.xml

CodePudding user response:

(Fixed the problem on my Ubuntu 20.04 machine, but the error was the same)

The problem was, that I only had downloaded a jdk-17 into IntelliJ.

I simply installed the jdk-17 by running sudo apt install openjdk-17-jdk, which installs the jdk and
sudo update-alternatives --config java, which updates the intex of the newest jdk (i think).

The last step was to restart IntelliJ and I was good to go.

  • Related