1. Design a Date class. The class should support the following functionalities
   2. Compare two dates and give the difference in no of days
   3. Support manipulation of the date like adding and subtracting days and months.
   4. Extract out parts of date day , month , year , day of the week , month name etc
   5. Display the date in a certain format American (mm/dd/yyyy), British (dd/mm/yyyy), Japanese dd.mm.yyyy)
   6. Store a specific date