如何在java.awt.Graphics中删除部分圆圈？

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class CircleDeletionExample extends JPanel {
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        
        // 设置要绘制的圆圈的颜色
        g.setColor(Color.RED);
        
        // 绘制圆圈
        g.fillOval(50, 50, 100, 100);
        
        // 设置要删除的圆圈的颜色
        g.setColor(getBackground());
        
        // 绘制一个与要删除的圆圈相同大小的圆圈，覆盖要删除的圆圈
        g.fillOval(50, 50, 100, 100);
    }
    
    public static void main(String[] args) {
        JFrame frame = new JFrame("Circle Deletion Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(200, 200);
        
        CircleDeletionExample panel = new CircleDeletionExample();
        frame.add(panel);
        
        frame.setVisible(true);
    }
}