496.Toy Factory-玩具工厂（容易题）

玩具工厂

1. 题目

   工厂模式是一种常见的设计模式。请实现一个玩具工厂 ToyFactory 用来产生不同的玩具类。可以假设只有猫和狗两种玩具。

2. 样例

   ToyFactory tf = ToyFactory();
   Toy toy = tf.getToy(‘Dog’);
   toy.talk();

   Wow

   toy = tf.getToy(‘Cat’);
   toy.talk();

   Meow

3. 题解

/**
 * Your object will be instantiated and called as such:
 * ToyFactory tf = new ToyFactory();
 * Toy toy = tf.getToy(type);
 * toy.talk();
 */
interface Toy {
    void talk();
}

class Dog implements Toy {
    public void talk()
    {
        System.out.println("Wow");
    }
}

class Cat implements Toy {
    public void talk()
    {
        System.out.println("Meow");
    }
}

public class ToyFactory {
    /**
     * @param type a string
     * @return Get object of the type
     */
    public Toy getToy(String type) {
        Toy toy = null;
        if (type.equals("Dog"))
        {
            toy =  new Dog();
        }
        else if (type.equals("Cat"))
        {
            toy =  new Cat();
        }
        return toy;
    }
}

Last Update 2016.9.18