设计模式之工厂模式

1.接口类Human

public interface Human {
    void getColor();
    void talk();
}

2.实现类

/**
 * black human
 */
public class BlackHuman implements Human {
    @Override
    public void getColor() {
        System.out.println("黑人");
    }

    @Override
    public void talk() {
        System.out.println("黑人, Hello");
    }
}


public class WhiteHuman implements Human {
    @Override
    public void getColor() {
        System.out.println("白种人");
    }

    @Override
    public void talk() {
        System.out.println("白种人, hello");
    }
}

public class YellowHuman implements Human {
    @Override
    public void getColor() {
        System.out.println("黄种人");
    }

    @Override
    public void talk() {
        System.out.println("黄种人，hello");
    }
}

3.抽象工厂类

package com.example.demo.entity;

public abstract class AbstractHumanFactory {
    public abstract <T extends Human> T createHuman(Class <T> c);
}

4.实现工厂类

package com.example.demo.entity;

public class HumanFactory extends AbstractHumanFactory {


    @Override
    public <T extends Human> T createHuman(Class<T> c) {
        //定义一个生产的人种
        Human human =null;
        try {
            human = (T)Class.forName(c.getName()).newInstance();
        }catch (Exception e){
            System.out.println("人种生成错误！");
        }
        return (T)human;

    }
}

5.场景类

package com.example.demo.entity;

public class NvWa {
    public static void main(String[] args) {
        AbstractHumanFactory humanFactory = new HumanFactory();
        YellowHuman human = humanFactory.createHuman(YellowHuman.class);
        human.getColor();
        human.talk();
    }
}