Question

User Profiles

• Write a program that reads in a series of customer information -- including name, gender, phone, email and password -- from a file and stores the information in an ArrayList of User objects.
• Once the information has been stored, the program should welcome a user and prompt him or her for an email and password
• The program should then use a linearSearch method to determine whether the user whose name and password entered match those of any of the users stored in the ArrayList.
• If the program finds a match, it should greet the user by name.
• If the program does not find a match, it should print the message "Sorry! We don't have your account on file." to the console.
• All of your code should be stored in two files: User.java and Profile.java
• User.java is a class which defines a User. Given the starter code provided below, it is your job to complete the implementation of this class by writing the methods whose signatures are provided
• Profile.java should contain a main method. In this main method, you should
  • Read in the data from the file, storing the information for each user in a User object
  • Insert each User object into the provided ArrayList
  • Complete the linearSearch method whose signature is provided
  • Prompt the user to enter an email and password and call the linearSearch method to determine whether the email and password match the information of any of the stored users.
  • Print the appropriate message to the console as described above.
• Note: you are not allowed to implement any additional methods aside from those whose signatures are provided or to alter the method signatures in any way from what is provided, or you will not receive credit for this assignment.
• Note 2: Please do not write to a file in this program.
• When your program is working as shown below, please submit both User.java and Profile.java to Canvas.

names.txt input file:

Jiming Wu
F
4082123458
[email protected]
abc123
James Brown
M
8315678432
[email protected]
jjjbbb123
Leanna Perez
F
4087654433
[email protected]
letmein
Xing Li
M
8313214555
[email protected]
555!!!hi
Stacey Cahill
O
8312123333
[email protected]
r0tr@tr^n
Mohammed Abbas
M
4083134444
[email protected]
1@m@bb@s
Kumari Chakrabarti
F
4086667777
[email protected]
passw0rd
Shakil Smith
M
4082123333
[email protected]
qwerty
Jung Ahrin
F
8319257788
[email protected]
password1
Pedro Martinez
M
4086162323
[email protected]
123456789
Ally Gu
O
4089256776
[email protected]
trustno1
Tamara White
F
8317778978
[email protected]
1qaz2wsx
Alvin Ngo
M
4089256677
[email protected]
qwertyuiop
Abir Fadel
M
8316645325
[email protected]
qazwsx
Brad Feinman
M
8312023443
[email protected]
11111
Xiaohang Yue
M
8318990033
[email protected]
adobe123

User.java Starter Code:

/**
* Definition of the User class
* @author

* @author

* CIS 36B, Lab 6
*/

public class User {

    public String name;
    public String gender;
    public String phone;
    public String email;
    public String password;

   
   /**
    * prints a User's information to the console

     * in the below format:

     * Name: <name>

   * Gender: <gender>

     * Phone: (XXX) XXX-XXXX

   * Email: <email>

     */
    public void printUser() {

        System.out.println("You fill in here!");

    }

}

Profile.java Starter Code:

/**
* Profile.java
* @author

* @author

* CIS 36B, Lab 6
*/

import java.util.ArrayList;
import java.util.Scanner;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;

public class Profile {
    public static void main(String[] args) throws IOException {
        ArrayList<User> users = new ArrayList<User>();
        File names = new File("names.txt");
        Scanner input = new Scanner(names);
        String name, phone, gender, email, password;
        while (input.hasNextLine()) {

            //read in the information for each user

            //create a new User object

            //assign values to user object's variables

            //insert user object into users ArrayList

        }
        input.close();
        input = new Scanner(System.in);
        System.out.println("Welcome!\n");
        System.out.print("Enter your email address: ");
        email = input.nextLine();
        System.out.print("Enter your password: ");
        password = input.nextLine();

        //search

           
    }

  
   /**
    * Searches for a user whose email and password match
    * those currently stored in the users ArrayList
    * @param email the email that was input
    * @param password the password input
    * @param users the ArrayList storing customers on file
    * @return the location of the user or -1 if not found
    */
    public static int linearSearch(String email, String password, ArrayList<User> users) {

        return -1;

    }

}

Notes and Helpful Hints:

• Note that if you call the get method on the users ArrayList, it will return a User object from the list:

        User u = users.get(0); //retrieves first User object from the ArrayList

   users.get(0).printUser(); //prints the information about User at index 0

   System.out.println(users.get(0).email); //prints the email address of the User at index 0

• Below is an example of the output that the printUser() method should provide:

Name: Leanna Perez
Gender: F
Phone: (408) 765-4433

Email: [email protected]

• Don't forget that you can always consult the ArrayList API (documentation) on the Oracle website for additional methods not covered in class.

Sample Output:

Welcome!

Enter your email address: [email protected]
Enter your password: letmein

Hi, Leanna Perez!
We have the following information on file for you:
Name: Leanna Perez
Gender: F
Phone: (408) 765-4433

Email: [email protected]

Alternately:

Welcome!

Enter your email address: [email protected]
Enter your password: 555111jjjlll

Sorry! We don't have your account on file.

Answer 1

User.java

/**
* Definition of the User class
* @author
* @author
*        CIS 36B, Lab 6
*/

public class User {

   public String name;
   public String gender;
   public String phone;
   public String email;
   public String password;

   /**
   * prints a User's information to the console
   * in the below format:
   * Name: <name>
   * Gender: <gender>
   * Phone: (XXX) XXX-XXXX
   * Email: <email>
   */
   public void printUser() {
       System.out.println("Hi, "+name+"!");
       System.out.println("We have the following information on file for you:");
       // USe substring to format number into (XXX) XXX-XXXX
       System.out.println("Name: "+name
                       +"\nGender: "+gender
                       +"\nPhone: "+"("+phone.substring(0, 3)+") "+phone.substring(3,6)+"-"+phone.substring(6,10)
                       +"\nEmail: "+email);
              
   }

}

Profile.java

/**
* Profile.java
* @author
* @author
* CIS 36B, Lab 6
*/

import java.util.ArrayList;
import java.util.Scanner;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;

public class Profile {
   public static void main(String[] args) throws IOException {
       ArrayList<User> users = new ArrayList<User>();
       File names = new File("names.txt");
       Scanner input = new Scanner(names);
       String name, phone, gender, email, password;
       while (input.hasNextLine()) {

           // read in the information for each user
           name = input.nextLine();
           gender = input.nextLine();
           phone = input.nextLine();
           email = input.nextLine();
           password = input.nextLine();

           // create a new User object
           User user = new User();

           // assign values to user object's variables
           user.name = name;
           user.gender = gender;
           user.phone = phone;
           user.email = email;
           user.password = password;

           // insert user object into users ArrayList
           users.add(user);
       }
       input.close();
       input = new Scanner(System.in);
       System.out.println("Welcome!\n");
       System.out.print("Enter your email address: ");
       email = input.nextLine();
       System.out.print("Enter your password: ");
       password = input.nextLine();

       // search
       System.out.println();
       int index = linearSearch(email, password, users);
       // If returned value is not -1, print user information
       // Else, print message accordingly
       if (index != -1) {
           users.get(index).printUser();
       } else {
           System.out.println("Sorry! We don't have your account on file.");
       }
   }

   /**
   * Searches for a user whose email and password match those currently stored in
   * the users ArrayList
   *
   * @param email
   * the email that was input
   * @param password
   * the password input
   * @param users
   * the ArrayList storing customers on file
   * @return the location of the user or -1 if not found
   */
   public static int linearSearch(String email, String password, ArrayList<User> users) {
       // Iterate over arraylist, if email and password matches
       // return index i
       // else return -1 after the loop
       for (int i = 0; i < users.size(); i++) {
           User u = users.get(i);
           if (u.email.equals(email) && u.password.equals(password)) {
               return i;
           }
       }
       return -1;

   }

}

OUTPUT