GUI之1个监听类监听多个按钮

package day15;

 

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

 

public class TwoButton {

    public static void main(String[] args) {

        Frame frame = new Frame("开始-停止");

        Button button1 = new Button("start");

        Button button2 = new Button("stop");

        button2.setActionCommand("button2-stop");

        //可以显示的定义触发会返回的命令，如果不显示定义，则会走默认的值

        //可以多个按钮只写一个监听类

        MyMonitor myMonitor = new MyMonitor();

 

        button1.addActionListener(myMonitor);

        button2.addActionListener(myMonitor);

 

        frame.add(button1, BorderLayout.NORTH);

        frame.add(button2, BorderLayout.SOUTH);

 

        frame.pack();

        frame.setVisible(true);

    }

}

 

class MyMonitor implements ActionListener {

    @Override

    public void actionPerformed(ActionEvent e) {

        System.out.println("按钮被点击了：" + e.getActionCommand());

    }

}

执行结果：