Java语言怎么根据轮廓填充对应实现画图的代码怎么实现呢

import javax.swing.*;
import java.awt.*;
import java.awt.geom.GeneralPath;

public class FillShapeExample extends JFrame {
    public FillShapeExample() {
        setTitle("Fill Shape Example");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 400);
        setLocationRelativeTo(null);
        setVisible(true);
    }

    @Override
    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;

        GeneralPath path = new GeneralPath();
        path.moveTo(100, 100);
        path.lineTo(200, 100);
        path.lineTo(150, 200);
        path.lineTo(100, 100);
        path.closePath();

        g2.setColor(Color.BLUE);
        g2.fill(path);
    }

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