Appointment

Design the sub-menus per your choice/need. For each of the “See Appointments” options above (i.e. A, B, E), the sub-menu should allow the user to save the data to a file. The user should be able to give the name of the file. Then, in option F above, allow the user to reload the data from a file. Here also, allow the user to specify the name of which file to load. The saving part is straightforward: Make a method save. Save the type, description, and date to a file. The loading part is not so easy. First determine the type of the appointment to be loaded, create an object of that type, and then call a load method to load the data. After each menu/ sub-menu choice is completed, come back to the User Interface, i.e. the only way to exit the program is though Choice G.