在javafx中尝试制作不同颜色的圆圈

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

public class ColorfulCircles extends Application {
    @Override
    public void start(Stage primaryStage) {
        Pane root = new Pane();

        // 创建红色圆圈
        Circle redCircle = new Circle(50, Color.RED);
        redCircle.setCenterX(100);
        redCircle.setCenterY(100);

        // 创建绿色圆圈
        Circle greenCircle = new Circle(50, Color.GREEN);
        greenCircle.setCenterX(200);
        greenCircle.setCenterY(100);

        // 创建蓝色圆圈
        Circle blueCircle = new Circle(50, Color.BLUE);
        blueCircle.setCenterX(300);
        blueCircle.setCenterY(100);

        root.getChildren().addAll(redCircle, greenCircle, blueCircle);

        Scene scene = new Scene(root, 400, 200);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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