设计模式（二）之装饰模式 | 说好了面向对象，谁也不许赖谁~

//需要被装饰的对象public class Person {
    private String name;
    public Person(String name) {        super();        this.name = name;    }
    public Person() {        super();    }
    public void show(){
        System.out.println("装扮的"+name);    }
}
//功能的抽象类
public class Finery extends Person{
    protected Person component;    //打扮    public void Decorate(Person component){        this.component = component;    }    @Override    public void show(){        if(component != null){            component.show();        }    }
}//继承功能类public class BigTrouser extends Finery {    @Override
    public void show(){        System.out.println("垮裤");        super.show();    }
}
//继承功能类
public class TShirts extends Finery {
    @Override
    public void show(){        System.out.println("大T恤");        super.show();    }
}//继承功能类public class WearSneakers extends Finery {    @Override    public void show(){        System.out.println("破球鞋");        super.show();
    }
}
//继承功能类public class WearSuit extends Finery{    @Override    public void show(){        System.out.println("西装");        super.show();    }}
//动态给对象添加功能
public class Test {    public static void main(String[] args) {
        Person xc = new Person("小菜");
        System.out.println("第一种装扮：");
        WearSneakers w = new WearSneakers();
        WearSuit ws = new WearSuit();
        BigTrouser bt = new BigTrouser();
        /*
         * 首先实例化person对象
         * 再用WearSneakers类包装person
         * 再用WearSuit类来包装WearSneakers对象         * 再用BigTrouser类包装WearSuit对象         * 最终执行BigTrouser的show方法。         * 
         */
        w.Decorate(xc);   
        ws.Decorate(w);
        bt.Decorate(ws);
        bt.show();
    }
}