如何用Java开发多点触控应用程序？

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.input.TouchEvent;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class MultiTouchApp extends Application {

    @Override
    public void start(Stage primaryStage) {
        Pane pane = new Pane();
        Scene scene = new Scene(pane, 800, 600);

        // 处理触摸事件
        scene.addEventHandler(TouchEvent.TOUCH_PRESSED, event -> {
            Circle circle = new Circle(event.getTouchPoint().getX(), event.getTouchPoint().getY(), 50, Color.BLUE);
            pane.getChildren().add(circle);
        });

        primaryStage.setTitle("多点触控应用程序");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}