如何在awt中关闭窗口？

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class CloseWindowExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        
        frame.setVisible(true);
    }
}