设计模式-命令模式

来源：互联网发布：管理员权限安装软件编辑：程序博客网时间：2024/06/02 01:03

命令模式概述：
http://baike.baidu.com/link?url=xL1IdoM5a_exqMqs6WGIoee4CDDeqIWQXEfKNu8qa149gFuc8AV3L91sDRy3qNk7G0t8tW895NIXLg5JjvWWkq
例子：

public interface Commond {//命令接口    public void action(); //执行命令 }

// 命令接收者public class Receiver {    public void back() {//返回行为        System.out.println("back =====");    }    public void on() {//打开行为        System.out.println("on =====");    }}

public class BackCommond implements Commond {//返回的命令    private Receiver receiver;    public BackCommond(Receiver receiver) {        this.receiver = receiver;    }    @Override    public void action() {        receiver.back();    }}

public class OnCommond implements Commond {//打开的命令    private Receiver receiver;    public OnCommond(Receiver receiver) {        this.receiver = receiver;    }    @Override    public void action() {        receiver.on();          }}

public class Controller {//命令控制者    private Commond commond;    public Controller(Commond commond){        this.commond = commond;    }    public void action(){        commond.action();    } }

public class Test {    public static void main(String[] args) {        Receiver receiver = new Receiver();        // Commond commond = new OnCommond(receiver);        Commond commond = new BackCommond(receiver);        Controller controller = new Controller(commond);        controller.action();    }}

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