a. You created an interactive StaffDinnerEvent class that obtains all the data for a dinner event for Carly’s Catering, including details about the event and all the staff members required to work at the event. Now, modify the program to prompt the user for data for three dinner events and to create a data file that contains each event number, event type code, number of guests, and price. 

Save the program as StaffDinnerEventAndCreateFile.java.
b. Write a program that displays the data saved in the file created in part 1a. 

Save the program as DisplayDinnerEventFile.java.