设计模式_01_装饰与适配

一.装饰者

1.Diagrams

2.代码实现

//接口Man
public interface Man {
    void eat();
    void sleep();
    void fight();
}

//类NormalMan 实现 接口Man 
public class NormalMan implements Man{
	//重写接口中的全部抽象方法
    @Override
    public void eat() {
        System.out.println("stop playing around and eat!");
    }

    @Override
    public void sleep() {
        System.out.println("sleep like a log ");
    }

    @Override
    public void fight() {
        System.out.println("fight ability : 5 ");
    }
}

//类IronMan 实现 接口Man
public class IronMan implements Man {
    //这里将被装饰者作为成员变量
    private NormalMan normalMan;

    public IronMan() {
    }

    public IronMan(NormalMan normalMan) {
        this.normalMan = normalMan;
    }

    //以下方法不需要被加强 则直接调用方法
    @Override
    public void eat() {
        normalMan.eat();
    }

    @Override
    public void sleep() {
        normalMan.sleep();
    }

    //这里需要加强 则重写以加强方法
    @Override
    public void fight() {
        System.out.println("fight ability : 100 up");
    }
}

//Test
@Test
public void deckerTest() {
    NormalMan normalMan = new NormalMan();
    normalMan.eat();
    normalMan.sleep();
    normalMan.fight();

    IronMan ironMan = new IronMan(normalMan);
    ironMan.eat();
    ironMan.sleep();
    ironMan.fight();
}

//console
stop playing around and eat!
sleep like a log 
fight ability : 5 
    
stop playing around and eat!
sleep like a log 
fight ability : 100 up

二.适配器

1.Diagrams

2.代码实现

//接口Monk
public interface Monk {
    void longSeat();
    void patter();
    void eatMeat();
    void pullWillow();
}

//类MonkAdapter 实现接口Monk 将方法存入适配器
public class MonkAdapter implements Monk{
    @Override
    public void longSeat() {

    }

    @Override
    public void patter() {

    }

    @Override
    public void eatMeat() {

    }

    @Override
    public void pullWillow() {

    }
}

//继承适配器,需要什么就拿什么
public class huaMonk extends MonkAdapter{
    public void eatMeat() {
        System.out.println("吃肉ing...");
    }

    public void pullWillow() {
        System.out.println("倒拔杨柳ing...");
    }
}

public class yixiuMonk extends MonkAdapter{
    public void longSeat() {
        System.out.println("打坐ing...");
    }

    public void patter() {
        System.out.println("念经ing...");
    }
}

@Test
public void adapterTest() {
    yixiuMonk yixiu = new yixiuMonk();
    yixiu.longSeat();
    yixiu.patter();

    huaMonk hua = new huaMonk();
    hua.eatMeat();
    hua.pullWillow();
}

//console

打坐ing...
念经ing...
    
吃肉ing...
倒拔杨柳ing...