Question

Write a program that will maintain a personal phonebook.   The program should be menu driven.

1. Create a new phonebook
2. Print the phonebook
3. Add person to the phonebook
4. Remove a person from the phonebook
5. Sort
6. Modify a person
7. Search for a person by name
8. Save to a data file   (Can't be done but leave an error message if the user selects)   
9. Retreive phonebook from data file  (Can't be done but leave an error message if the user selects)
10. Quit

Create a Person class. (name, age, id number, phone number, zip code)

Include 2 constructors, get and set methods, compareTo, and toString methods.

Also please add comments!

Answer 1

thanks for the question, here are the 3 classes, Due to time constraint, i could not finish of the modify function, rest all methods are implemented.

Here are the code for the 3 classes

========================================================

public class Person implements Comparable<Person> {

    private String name;
    private int age;
    private int id;
    private String phoneNumber;
    private int zipCode;

    public Person(String name, int age, int id, String phoneNumber, int zipCode) {
        this.name = name;
        this.age = age;
        this.id = id;
        this.phoneNumber = phoneNumber;
        this.zipCode = zipCode;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }

    public int getZipCode() {
        return zipCode;
    }

    public void setZipCode(int zipCode) {
        this.zipCode = zipCode;
    }

    @Override
    public int compareTo(Person person) {
        return this.name.compareTo(person.getName());
    }

    @Override
    public String toString() {
        return name +
                ", Age: " + age +
                ", ID: " + id +
                ", Phone Number: " + phoneNumber + '\'' +
                ", ZipCode: " + zipCode;
    }

    @Override
    public boolean equals(Object o) {
        if (o != null && o instanceof Person) {
            Person p = (Person) o;
            return this.getName().equals(p.getName()) && this.getId() == p.getId() &&
                    this.getPhoneNumber().equals(p.getPhoneNumber());

        }
        return false;
    }
}

========================================================

import java.util.ArrayList;
import java.util.Collections;

public class PhoneBook {

    private ArrayList<Person> persons;

    public PhoneBook() {
        persons = new ArrayList<>();
    }

    public void addPerson(Person person) {
        persons.add(person);
        System.out.println("Person added successfully");
    }

    public void removePerson(String name) {
        Person personToDelete = null;
        for (Person person : persons) {
            if (person.getName().equalsIgnoreCase(name)) {
                personToDelete = person;
                break;
            }
        }
        if (personToDelete != null) {
            persons.remove(personToDelete);
            System.out.println("Person deleted successfully");
        } else {
            System.out.println("No person with name: " + name + " found in the directory");
        }
    }

    public void sortPhoneBook() {
        Collections.sort(persons);
    }

    public Person searchPerson(String name) {

        for (Person person : persons) {
            if (person.getName().equals(name)) {
                return person;
            }
        }
        System.out.println("No person with name: " + name + " found in the directory");
        return null;
    }

    public void modifyPerson(Person person) {

        for (Person p : persons) {
            if (p.getName().equals(person.getName())) {
                p = person;
                return;
            }
        }
    }

    public void saveData() {
        System.out.println("ERROR: IN DEVELOPEMENT");
    }

    public void readData() {
        System.out.println("ERROR: IN DEVELOPEMENT");
    }

    public void printPersons() {
        for (Person person : persons) {
            System.out.println(person);
        }
    }

}

========================================================

import java.util.Scanner;

public class PhoneBookApplication {

    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {

        System.out.println("WELCOME TO PHONE BOOK APPLICATION");
        PhoneBook phoneBook = new PhoneBook();
        while (true) {
            System.out.println("[1] - Add Person");
            System.out.println("[2] - Print Phone Book");
            System.out.println("[3] - Remove Person");
            System.out.println("[4] - Sort Phone Book");
            System.out.println("[5] - Modify Person");
            System.out.println("[6] - Save to file");
            System.out.println("[7] - Load file");
            System.out.println("[8] - Quit");
            int choice = scanner.nextInt();
            switch (choice) {

                case 1:
                    addPerson(phoneBook);
                    break;
                case 2:
                    phoneBook.printPersons();
                    break;
                case 3:
                    removePerson(phoneBook);
                    break;
                case 4:
                    phoneBook.sortPhoneBook();
                    break;
                case 5:
                    break;
                case 6:
                    phoneBook.saveData();
                    break;
                case 7:
                    phoneBook.readData();
                    break;
                case 8:
                    System.out.println("Thanks for using the application");
                    return;

            }
        }
    }

    public static void addPerson(PhoneBook phoneBook) {

        System.out.print("Enter person name: ");
        String name = scanner.nextLine();
        System.out.print("Enter age: ");
        int age = scanner.nextInt();
        scanner.nextLine();
        System.out.print("Enter person ID: ");
        int id = scanner.nextInt();
        scanner.nextLine();
        System.out.print("Enter phone number: ");
        String phone = scanner.nextLine();
        System.out.print("Enter zip code: ");
        int zipCode = scanner.nextInt();
        scanner.nextLine();

        Person person = new Person(name, age, id, phone, zipCode);
        phoneBook.addPerson(person);

    }

    public static void removePerson(PhoneBook phoneBook) {
        System.out.print("Enter person name whom you want to delete: ");
        String name = scanner.nextLine();
        phoneBook.removePerson(name);
    }
}

========================================================

thanks !!!