先配置pom文件。

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.openjfx</groupId>
  <artifactId>hellofx</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>demo</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.openjfx</groupId>
      <artifactId>javafx-controls</artifactId>
      <version>13</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openjfx</groupId>
        <artifactId>javafx-maven-plugin</artifactId>
        <version>0.0.3</version>
        <configuration>
          <mainClass>AppStart</mainClass>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

然后在src路径下，建立一个启动类和一个app类。

package com.oracle.cuber4you;
public class AppStart {
    public static void main(String[] args) {
        App.main(args);
app类中
package com.oracle.cuber4you;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
 * Hello world!
public class App extends Application
    public static void main( String[] args )
        System.out.println( "Hello World!" );
        launch();
    @Override
    public void start(Stage primaryStage) throws Exception {
        // TODO Auto-generated method stub
         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);
            primaryStage.setScene(scene);
            primaryStage.show();
即可启动项目。
注意，不能直接启动App，会出现“错误: 缺少 JavaFX 运行时组件, 需要使用该组件来运行此应用程序”此错误。
下面是javaFx的网站。
https://openjfx.io/openjfx-docs/#maven