(Enhancing Class Date) Modify class Date of Fig. to perform error checking on the initiali...

(Enhancing Class Date) Modify class Date of Fig. to perform error checking on the initializer values for instance variables month, day and year (currently it validates only the month and day). Provide a method nextDay to increment the day by one. The Date object should remain in a consistent state. 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. | Date class declaration.