java设计模式(精通系列)-Decorator

来源：互联网发布：监控突然无网络视频编辑：程序博客网时间：2024/06/03 14:10

装饰模式:动态的给一个对象加一些额外的功能
这里写图片描述

public class App {    public static void main(String[] args) {        System.out.println("比比鸟出现了");        Troll troll=new SimpleTroll();        troll.attack();        System.out.println("比比鸟处于附魔状态，更加强大");        troll=new ClubbedTroll(troll);        troll.attack();        troll.fleeBattle();    }}

public class ClubbedTroll implements Troll{    private Troll decorated;    public ClubbedTroll(Troll decorated){        this.decorated=decorated;    }    @Override    public void attack() {        decorated.attack();        System.out.println("附带伤害");    }    @Override    public int getAttackPower() {        return decorated.getAttackPower()+10;    }    @Override    public void fleeBattle() {        decorated.fleeBattle();    }}

public class SimpleTroll implements Troll {    @Override    public void attack() {        System.out.println("比比鸟攻击了你");    }    @Override    public int getAttackPower() {        return 10;    }    @Override    public void fleeBattle() {        System.out.println("比比鸟逃跑了");    }}

public interface Troll {    void attack();    int getAttackPower();    void fleeBattle();}

解析:可以看出都是继承一个类，然后另一个

阅读全文

0 0