如何通过实例化类让多个JButtons单独工作？

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class ButtonExample {
    private JButton button1;
    private JButton button2;

    public ButtonExample() {
        button1 = new JButton("Button 1");
        button2 = new JButton("Button 2");

        button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 处理按钮1的点击事件
                System.out.println("Button 1 clicked");
            }
        });

        button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 处理按钮2的点击事件
                System.out.println("Button 2 clicked");
            }
        });
    }

    public static void main(String[] args) {
        ButtonExample example = new ButtonExample();

        // 创建一个包含按钮的窗口
        JFrame frame = new JFrame("Button Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(example.button1);
        frame.getContentPane().add(example.button2);
        frame.pack();
        frame.setVisible(true);
    }
}