java中enum参数怎么赋值

java中enum参数怎么赋值

public class MainClass {
  enum Day {
    Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
  }

  public static void main(String[] args) {
    Day yesterday = Day.Tuesday;
    Day today = Day.Wednesday;
    Day tomorrow = Day.Thursday;
    print(yesterday,today,tomorrow);
  }
  static void print(Day yesterday,Day today,Day tomorrow){
    System.out.println("Today is " + today);
    System.out.println("Tomorrow will be " + tomorrow);
    System.out.println("Yesterday was " + yesterday);
  }
}