tua mae

package ip;

public class Week {
public static final int MONDAY = 1;
public static final int TUESDAY = 2;
public static final int WEDNESDAY = 3;
public static final int THURSDAY = 4;
public static final int FRIDAY = 5;
public static final int SATURDAY = 6;
public static final int SUNDAY = 7;
private int firstWeekDay;

public Week(int firstWeekDay){
    this.firstWeekDay = firstWeekDay;
        }
public int WeekDay (int day){
    return (firstWeekDay + day) % 8;
    }
}