Java—工厂模式

工厂模式：
public interface Cookie {
    public abstract void run ();
}

public abstract class CookieFactory {
    abstract Cookie create();
}

public class BearCookie implements Cookie{
    public void run (){
        System.out.println("正在制作小熊饼干");
    }
}

public class NumberOneFactory extends CookieFactory{
    Cookie create(){
        return new BearCookie();
    }
}

public class Test {
    public static void main(String[] args) {
        CookieFactory cf=new NumberOneFactory();
        Cookie c=cf.create();
        c.run();
    }
}