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This is the question I'm trying to figure out: Write a program that uses one of the Map classes to implement a contact list.

Hi! This is the question I'm trying to figure out:

Write a program that uses one of the Map classes to implement a contact list. Contact information should include first name, last name, a phone number and an email address. The list should be stored on your computer's file system and entries sorted alphabetically according to a person's last name. The program should prompt the user for the name of the file where the information is stored, and allow the user to add a contact from the list, delete a contact from the list, and display the entire contact list.

How could I create the file and save it to my computer? And how could I then revisit and manipulate the data on said file?

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