Toy Factory 496
Question
Factory is a design pattern in common usage. Please implement a ToyFactory which can generate proper toy based on the given type.
Example
ToyFactory tf = ToyFactory();
Toy toy = tf.getToy('Dog');
toy.talk();
Wow
toy = tf.getToy('Cat');
toy.talk();
Meow
Solution
和shape factory一样,重载函数。
代码如下:
/**
* 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 {
// Write your code here
public void talk(){
System.out.println("Wow");
}
}
class Cat implements Toy {
// Write your code here
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) {
// Write your code here
if(type.equals("Dog")){
return new Dog();
}else if(type.equals("Cat")){
return new Cat();
}
return null;
}
}