gistfile1.cs

public interface Bark{
  String GetSound();
}

public class Dog implements Bark{
  @Override
  public String GetSound(){
    return "멍멍";
  }
}

public class Cat implements Bark{
  @Override
  public String GetSound(){
    return "야옹";
  }
}

public class Factory{
  public static Bark getInstance(String key){
    if("개".equals(key)){
      return new Dog();
    }
    
    if("고양이".equals(key)){
      return new Cat();
    }
  }
}