enum 枚举的用法

package second.book.secondpage.enumall; public enum Days { /** * 一周天数的 */ MON, TUE, WED, THE, FRI, AT, SUN } package second.book.secondpage.enumall; public class DayThings { public void fun(Days day) { switch(day) { case MON: System.out.println("新的一周开始了"); break; case TUE: System.out.println("周二，天气刚刚好"); break; case WED: System.out.println("周三了，"); break; case THE: System.out.println("周四，山包"); break; case FRI: System.out.println("又准备放假了"); break; default: System.out.println("周末好好休息"); } } public static void main(String[] args) { DayThings day=new DayThings(); day.fun(Days.MON); } }