java 中的枚举类

模拟一个枚举类 日常我们遇到用一个静态类来定义常量 public class Weekday { public static final int SUN = 0; public static final int MON = 1; public static final int TUE = 2; public static final int WED = 3; public static final int THU = 4; public static final int FRI = 5; public static final int