13.15 模拟枚举类

package com.atguigu.day11.moshipipei

object EnumDemo {
  def main(args: Array[String]): Unit = {
    val seasons = Array(Spring, Summer, Autumn, Winter)
    for (season <- seasons) {
      val msg = season match {
        case Spring => "春天"
        case Summer => "夏天"
        case Autumn => "秋天"
        case Winter => "冬天"
        case _ => "每在地球上"
      }
      println(msg)
    }
  }
}

sealed abstract class Season

case object Spring extends Season

case object Autumn extends Season

case object Summer extends Season

case object Winter extends Season