enum类型用于switch语句

import java.util.*;
public class Demo13{
    
    
    public static void main(String[] args) {
        
        Weekday day = Weekday.SUN;
        
        //将enum类型用于switch语句
        //因为枚举类天生具有类型信息和有限个枚举常量，所以比int、String类型更适合用在switch语句中：
        switch(day){
            //注意：case 后面是空格 加上常量 最后冒号
            case MON:
            case TUE:
            case WED:
            case THU:
            case FRI:
                System.out.println("Today is " + day +". Work at office!");
                break;
            case SAT:
            case SUN:
                System.out.println("Today is " + day +". Work at home!");
                break;
            default:
                System.out.println("cannot process " + day);
        }
    }
}

enum Weekday{
    MON,TUE,WED,THU,FRI,SAT,SUN;
}