a. Create the logic for a program that calculates the due date for a bill. Th e program prompts the user for the month, day, and year a bill is received, then passes the data to a method that calculates the day the bill is due to be paid, which is exactly one month later. If the bill is received, for example, on March 15, 2011, the due date is April 15, 2011. However, if the bill is received on March 31, 2011, then the bill is due on April 30 because April 31 is an invalid date. From the method that calculates the date due, pass the original and calculated date in turn to a display method that displays each date with slashes between the parts of the date-for example 3/15/2011.
b. Modify the date displaying method so it displays each date using a string for the month-for example, March 15, 2011.