enum简介
在日常开发中可能有一些东西是固定的,比如一年只有4个季节,春夏秋冬。我们可以自己定义一个类里面存放这4个季节。在jdk5之后,引入了枚举(enum)的概念,可以通过enum去定义这四个季节。
定义常量类,里面存放四季
package com.sutaoyu.usually_class; public class String_test14 { //枚举 public enum Season{ Spring,Summer,Autumn,Winner; } //常用类 public class Constant{ public static final String SPRING = "Spring"; public static final String SUMMER = "Summer"; public static final String AUTUMN = "Autumn"; public static final String WINNER = "Winner"; } public static void main(String[] args) { System.out.println(Season.Spring); //Spring System.out.println(Constant.SPRING); //Spring } }