简单工厂模式

abstract class Fruit{   
}   
  
  
class Apple extends Fruit{   
}   
  
  
class Orange extends Fruit{   
}   
  
  
class FruitFactory{   
   pulic static Fruit getFruit(String fruitType){   
      if (“apple” == fruitType){   
         return new Apple();   
      } else if (“orange” == fruitType) {   
         return new Orange();   
      }   
   }   
}