JavaFX可以绘制指定颜色的气泡图吗？

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class BubbleChartExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        Canvas canvas = new Canvas(400, 400);
        GraphicsContext gc = canvas.getGraphicsContext2D();

        // 绘制气泡
        drawBubble(gc, 100, 100, 50, Color.RED);
        drawBubble(gc, 200, 200, 30, Color.BLUE);
        drawBubble(gc, 300, 300, 20, Color.GREEN);

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

    private void drawBubble(GraphicsContext gc, double x, double y, double radius, Color color) {
        gc.setFill(color);
        gc.fillOval(x - radius, y - radius, radius * 2, radius * 2);
    }

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