Modify class Date of Fig. 8.7 to perform error checking on the initializer values for variables month, day and year (currently it validates only the month and day). Provide a method nextDay to increment the day by one. Write a program that tests method nextDay in a loop that prints the date during each iteration to illustrate that the method works correctly. Test the following cases:

a) Incrementing into the next month and

b) Incrementing into the next year.

Fig. 8.7

I // Fig. 8.7: Date.java // Date class declaration. 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 25 N N N N N M M M M 26 27 28 29 30 31 32 33 34 35 36 37 38 public class Date { 39 40 41 42 43 44 45 } private int month; // 1-12 private int day; // 1-31 based on month private int year; // any year private static final int[] daysPerMonth = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; // constructor: confirm proper value for month and day given the year public Date(int month, int day, int year) { // check if month in range if (month 12) { throw new Illegal ArgumentException ( "month (" + month + ") must be 1-12"); } } // check if day in range for month if (day < 0 || (day> daysPerMonth [month] && ! (month == 2 && day throw new Illegal ArgumentException ("day (" + day + ") out-of-range for the specified month and year"); == == } // check for leap year if month is 2 and day is 29 if (month= 2 && day 29 && ! (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0))) { throw new Illegal ArgumentException ("day (" + day + ") out-of-range for the specified month and year"); } // return a String of the form month/day/year public String toString() { return String.format("%d/%d/%d", month, day, year); 29))) { } this month = month; this.day = day; this.year = year; System.out.printf("Date object constructor for date %s %n", this);