Java Data Type - 如何创建和执行计算与DayOfWeek

import java.time.DayOfWeek;
import java.time.format.TextStyle;
import java.util.Locale;

public class Main {

  public static void main(String[] args) {
    System.out.println(DayOfWeek.MONDAY);
    System.out.println(DayOfWeek.TUESDAY);
    System.out.printf("%s%n", DayOfWeek.MONDAY.plus(3));
    System.out.printf("%s%n", DayOfWeek.MONDAY.plus(401));
    System.out.printf("%s%n", DayOfWeek.MONDAY.minus(401));

  }
}