Design and implement the class Day that implements the day of the week in a prog

Question

Design and implement the class Day that implements the day of the week
in a program. The class Day should store the day, such as Sun for
Sunday. The program should be able to perform the following operations
on an object of the type Day:

a) Set the day
b) Print the day
c) Return the day
d) Return the next day
e) Return the previous day
f) Calculate and return a day by adding # of days to current day.
(ie. if current day is Monday and we add 3 days then new day
is Thursday)
g) Add the appropiate constructors // default & set constructors

Explanation / Answer

import java.util.*;
public class Day {

    private final List<String> DAYS = Arrays.asList(new String[] {"SUNDAY","MONDAY","TUESDAY","WEDNESDAY","THURSDAY","FRIDAY","SATURDAY"});
       
    String dayString;
    int dayInt;
   
    public Day(String day) {
        dayString = day;
        dayInt = dayToInt(day);
    }
   
    public Day(int day) {
        dayInt = day;
        dayString = DAYS.get(day);
    }
   
    public String toString() {
        return dayString;
    }
   
    public void setDay(String day) {
        dayString = day;
        dayInt = dayToInt(day);
    }
   
    public void setDay(int day) {
        dayInt = day;
        dayString = DAYS.get(day);
    }
   
    public String getDay() {
        return dayString;
    }
   
    public Day getNextDay() {
        return new Day((dayInt+1) % 7);
    }
   
    public Day getPreviousDay() {
        int prevDay = (dayInt - 1) % 7;
        if (prevDay < 0) prevDay += 7;
        return new Day(prevDay);
    }
   
    public Day addDays(int daysToAdd) {
        return new Day((dayInt+daysToAdd) % 7);
    }
       
    private int dayToInt(String day) {
        return DAYS.indexOf(day.toUpperCase());
    }
   
    public static void main(String[] args) {
        Day sunday = new Day("Sunday");
        System.out.println("Today is "+sunday);
        System.out.println("Yesterday was "+sunday.getPreviousDay());
        System.out.println("Tomorrow will be "+sunday.getNextDay());
        System.out.println("Nine days from now will be "+sunday.addDays(9));
        Day tuesday = new Day(2);
        System.out.println("Now the day is "+tuesday);
       
    }

}

pls rate thanks

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.