如何在switch语句中创建actionPerformed？

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

public class SwitchActionExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Switch Action Example");
        JButton button = new JButton("Click Me");

        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String command = e.getActionCommand();
                switch (command) {
                    case "Click Me":
                        JOptionPane.showMessageDialog(frame, "Button was clicked!");
                        break;
                    default:
                        JOptionPane.showMessageDialog(frame, "Unknown action.");
                        break;
                }
            }
        });

        frame.add(button);
        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}