GUI_事件监听机制与ActionListener演示

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class MonitorDemo {
    public static void main(String[] args) {
        Frame f=new Frame("黄剑锋");
        f.setSize(600,500);
        f.setLocation(300,200);
        f.setLayout(new FlowLayout());

        Button b=new Button("完成");
        f.add(b);
        
        
        //添加窗体监听
        f.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.out.println("closeing........."+e);
                System.exit(0);//关闭，也就是退出虚拟机
                super.windowClosing(e);
            }
            
        });
        
        //在按钮上添加监听
        b.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("Button run");
                System.exit(0);
            }
        });
        
        f.setVisible(true);
    }
}