如何使用EnumSet类

/*n o w j a v a . c o m - 时代Java 提 供*/

import java.util.EnumSet;

enum Day {

  MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY;

}


public class Main {

  public static void main(String[] args) {

    // Get all constants of the Day enum  

    EnumSet<Day> allDays = EnumSet.allOf(Day.class);

    print(allDays, "All days: " );

  

    // Get all constants from MONDAY to FRIDAY of the Day enum  

    EnumSet<Day> weekDays = EnumSet.range(Day.MONDAY, Day.FRIDAY);

    print(weekDays, "Weekdays: ");

    

    EnumSet<Day> weekends = EnumSet.complementOf(weekDays);

    print(weekends, "Weekends: ");    

  }

  

  public static void print(EnumSet<Day> days, String msg) {

    System.out.pri