What is the result(enum value)? : Questions « Object Oriented « SCJP

1. SCJP
2. Object Oriented
3. Questions

enum Animals {
    DOG("D"), CAT("C"), FISH("F");
    String sound;
    Animals(String s) { sound = s; }
  }
  public class MainClass{
    static Animals a;
    public static void main(String [] args) {
      System.out.println(a.DOG.sound + " " + a.FISH.sound);
   }
 }