GUI 监听事件

编写代码 TestActionEvent测试类

package com.xiang.lesson02;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class TestActionEvent {
    public static void main(String[] args) {
        Frame frame = new Frame();
        Button button = new Button("btn1");

//        因为addActionListener 需要一个  ActionListener ，所以就构造了一个ActionListener
        MyActionListener listener = new MyActionListener();
        button.addActionListener(listener);

        frame.add(button, BorderLayout.CENTER);

        frame.setVisible(true);
        frame.setBounds(400, 400, 400, 400);
        frame.setBackground(Color.yellow);
        WindowClose(frame);
    }

    //关闭窗体事件
    private static void WindowClose(Frame frame) {
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

// ActionListener 事件监听
class MyActionListener implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("MyActionListener");
    }
};

运行结果