黑馬學習-------------------枚舉

public class Test
{
	public enum WeekDay{

	    SUN,MON,THE(2),WED,THU,FRI,SAT;
        private WeekDay (){System.out.println("first");}
        private WeekDay(int w){System.out.println("second");}
	    
	}

	public static void main(String[] args)
	{
          WeekDay week=WeekDay.SUN;
          System.out.println(week);
          System.out.println(week.ordinal());
          System.out.println(week.name());
          WeekDay  day=WeekDay.valueOf("FRI");
          System.out.println(day.ordinal());
          for (WeekDay  w:WeekDay.values())
		{
			System.out.println(w.name());
			System.out.println(w.ordinal());
		}
	}
}