如何用JTextField，JButton和JLabel构建一个带有图形区域paintComponent的JFrame窗口？

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

public class MyFrame extends JFrame {
    
    private MyPanel panel;
    
    public MyFrame() {
        panel = new MyPanel();
        add(panel);
        
        // 设置窗口属性
        setTitle("My Frame");
        setSize(500, 500);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setVisible(true);
    }
    
    private class MyPanel extends JPanel {
        
        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            
            // 在这里绘制你的图形
            // 可以使用Graphics类提供的方法进行绘制，如g.drawLine(), g.drawRect()等
        }
    }
    
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new MyFrame());
    }
}

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    
    g.drawRect(50, 50, 200, 100);
}

public MyFrame() {
    panel = new MyPanel();
    add(panel);
    
    // 创建JTextField
    JTextField textField = new JTextField();
    textField.setBounds(50, 200, 200, 30);
    add(textField);
    
    // 创建JButton
    JButton button = new JButton("Click");
    button.setBounds(50, 250, 100, 30);
    add(button);
    
    // 创建JLabel
    JLabel label = new JLabel("Label");
    label.setBounds(50, 300, 100, 30);
    add(label);
    
    // 设置窗口属性
    setTitle("My Frame");
    setSize(500, 500);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLocationRelativeTo(null);
    setVisible(true);
}