Write an address book program that stores your contacts' names and theiremail addresses. the names and email addresses are originally stored in a file calledphonebook. in, in the format: harry pottertheboywholived@hogwarts. eduhermione grangerbrightestwitch@hogwarts. eduron weasleyroonilwazlib@hogwarts. edudraco @hogwarts. eduseverus snapehalfbloodprince@hogwarts. edualbus dumbledorealasearwax@hogwarts. eduyour program should read from the file, storing the names and correspondingemail addresses in a dictionary as key-value pairs. then, the programshould display a menu that lets the user enter the numbers 1 through5, each corresponding to a different menu item: 1) look up an email address2) add a new name and email address3) change an email address4) delete a name and email address5) save address book and exitwhen the user enters 1, the program should prompt them for a name, and thenprint the corresponding email address. if there is no dictionary entry underthat name, the program should print, "sorry, no contact exists under that name."when the user enters 2, the program should prompt them for a name and an emailaddress, then add a new key-value pair to the dictionary. when the user enters 3, the program should prompt them for a name and a newemail address for that contact. it should change the value of thecorresponding dictionary entry to match the new email address. when the user enters 4, the program should prompt them for a name and deletethe corresponding dictionary entry. when the user enters 5, the program should write the names and email addressesin alphabetical order by first name to the file phonebook. out.

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[java] create an application called registrar that has the following classes: a. a student class that minimally stores the following data fields for a student: - name - student id number - number of credits - total grade points earned and this class should also be provides the following methods: - a constructor that initializes the name and id fields - a method that returns the student name field - a method that returns the student id field - methods to set and retrieve the total number of credits - methods to set and retrieve the total number of grade points earned. - a method that returns the gpa (grade points divided by credits) b. an instructor class that minimally stores the following data fields for an instructor: - name - faculty id number - department the following methods should be provided: - a constructor that initializes the name and id fields - methods to set and retrieve the instructor’s department. c. a course class that minimally stores the following data for a course: - name of the course- course registration code- maximum number of 35 students- instructor- number of students- students registered in the course (an array)the following methods should also be provided: - a constructor that initializes the name, registration code, and maximum number of students- methods to set and retrieve the instructor- a method to search for a student in the course; the search should be based on an id number.- a method to add a student to the course. if the course is hill, then an exception with an appropriate message should be raised (try creating your own exception class for this). also, be sure that the student is not already registered in the course. the list of students should be in the order that they registered.- a method to remove a student from the course. if the student is not found, then an exception with an appropriate message should be raised (use the same exception class mentioned a method that will allow course objects to be output to a file using object serialization- a method that will allow course objects to be read in from a file created with object serializationyou will note that the student and instructor classes described above have some commonality. create aperson class that captures this commonality and uses it as a base class for student and instructor. this class should be responsible for the name and id fields and also provide atostring method that returns a string of the form name, id. this will be the inheritedtostring method for the student and instructor classes.1. draw a uml diagram for diss application.2. implement the previous classes in java. write a main program that can serve as a test class that tests all of the methods created and demonstrates that they are working

The place where the extended axis of the earth would touch the celestial sphere is called the celestial