Question

I'm struggling to figure out how to do this problem in Java, any help would be appreciated:

Create an application that uses a class to store and display contact information.

Console:

Welcome to the Contact List application

Enter first name: Mike

Enter last name: Murach

Enter email:      [email protected]

Enter phone:      800-221-5528

--------------------------------------------

---- Current Contact -----------------------

--------------------------------------------

Name:           Mike Murach

Email Address: [email protected]

Phone Number:   800-221-5528

--------------------------------------------

Continue? (y/n): n

Specifications

• Use a class named Contact to store the data for each contact. This class should include these methods:

public void setFirstName(String name)

public String getFirstName()

public void setLastName(String name)

public String getLastName()

public void setEmail(String email)

public String getEmail()

public void setPhone(String phone)

public String getPhone()

public String displayContact()

• Use the Console class presented in chapter 7 or an enhanced version of it to get and validate the user’s entries.
• The application should continue only if the user enters “y” or “Y” to continue.

Answer 1

/***************************************Contact.java**************************************/

public class Contact {

   private String firstName;
   private String lastName;
   private String email;
   private String phone;

   public Contact(String firstName, String lastName, String email, String phone) {
       super();
       this.firstName = firstName;
       this.lastName = lastName;
       this.email = email;
       this.phone = phone;
   }

   public String getFirstName() {
       return firstName;
   }

   public void setFirstName(String firstName) {
       this.firstName = firstName;
   }

   public String getLastName() {
       return lastName;
   }

   public void setLastName(String lastName) {
       this.lastName = lastName;
   }

   public String getEmail() {
       return email;
   }

   public void setEmail(String email) {
       this.email = email;
   }

   public String getPhone() {
       return phone;
   }

   public void setPhone(String phone) {
       this.phone = phone;
   }

   public String displayContact() {

       return "Name:\t" + firstName + " " + lastName + "\n" + "Email Address:\t" + email + "\n" + "Phone Number:\t"
               + phone;
   }
}

/*******************************Console.java***********************************/

import java.util.Scanner;

public class Console {

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

   public static String getLine(String prompt)

   {

       System.out.print(prompt);

       String s = sc.nextLine(); // read the whole line

       return s;

   }

   public static String getString(String prompt)

   {

       System.out.print(prompt);

       String s = sc.next(); // read the first string on the line

       sc.nextLine(); // discard the rest of the line

       return s;

   }

   public static int getInt(String prompt)

   {

       int i = 0;

       boolean isValid = false;

       while (!isValid)

       {

           System.out.print(prompt);

           if (sc.hasNextInt())

           {

               i = sc.nextInt();

               isValid = true;

           }

           else

           {

               System.out.println("Error! Invalid integer value. Try again.");

           }

           sc.nextLine(); // discard any other data entered on the line

       }

       return i;

   }

   public static int getInt(String prompt, int min, int max)

   {

       int i = 0;

       boolean isValid = false;

       while (!isValid)

       {

           i = getInt(prompt);

           if (i <= min)

               System.out.println(

                       "Error! Number must be greater than " + min + ".");

           else if (i >= max)

               System.out.println(

                       "Error! Number must be less than " + max + ".");

           else

               isValid = true;

       }

       return i;

   }

}

/******************************ContactDriver.java**************************************/

public class ContactDriver {

   public static void main(String[] args) {

       char option = ' ';

       System.out.println("Welcome to the Contact List application");
       do {

           String firstName = Console.getLine("Enter first name: ");
           String lastName = Console.getLine("Enter last name: ");
           String email = Console.getLine("Enter email: ");
           String phone = Console.getLine("Enter phone: ");

           Contact contact = new Contact(firstName, lastName, email, phone);
           System.out.println("----------------------------------------\n"
                   + "---------Current Contact-----------------\n" + "-----------------------------------------");
           System.out.println(contact.displayContact());
           System.out.println("-----------------------------------");
           option = Console.getLine("Continue?(y/n): ").toLowerCase().charAt(0);

       } while (option != 'n');

   }
}
/*****************************************output**********************************/

Please let me know if you have nay doubt or modify the answer, Thanks :)