a. Create a program that accepts any number of first names, last names, and associated phone numbers from the keyboard and saves the data to a file. Save the program as WritePhoneList.java. When you execute the program, enter multiple records that have the same first name because you will search for repeated first names in part c of this exercise.
b. Write an application that reads the file created by the WritePhoneList application and displays the records. Save the file as DisplaySavedPhoneList.java.
c. Write an application that allows you to enter any first name and displays all the last names and phone numbers for records with the given first, name. Display an appropriate message if the first name cannot be found in the input file. Save the file as DisplaySelectedNumbers.java.
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