Java Data Type - 如何使用ordinal()获取所有序数值

enum Week {
  Monday, Tuesday, Wednesday, Thursday, Friday, Saturaday, Sunday
}

public class MainClass {
  public static void main(String args[]) {

    // Obtain all ordinal values using ordinal().
    System.out.println("Here are all week constants" + " and their ordinal values: ");
    for (Week day : Week.values())
      System.out.println(day + " " + day.ordinal());

  }
}