This program will read in a series of names, along with an associated gender, from an input file of unknown length. The program uses a while loop to read in each name from the file by using the hasNextLine() method from the Scanner class. Please use a while loop for practice, although you could also write this assignment using a for loop to read from the file. As you read in each name, you will store it in an array, along with a title (Mr. or Ms. or Mx.) dependent on the stated gender. The first line of each file will contain the number of names contained in the file (hint: this is the same structure as the input file in your assignment 18.2). Additionally, this program should have two methods, as follows: The first method: The method is named extractInitial It takes a String parameter It extracts the first letter (initial) from the String parameter It returns a char for the initial. Note: You must write a complete Javadoc for this method to receive full credit. The second method: The method is named printArray It takes an array of Strings as a parameter It has a second String parameter which is a file name It opens up a new PrintWriter and connects it to the file passed in as a parameter It prints out the array to the file using a for loop It closes the PrintWriter It returns nothing Hint: You will need to update the method signature to throw an IOException. Note: You must write a complete Javadoc for this method to receive full credit. Part of the trick of this assignment will be to determine the appropriate time to call each method. Copy and paste the starter code below into a new file called TrackCustomers.java

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Concept explainers

Question

(Intro to Java)

Only use while loop or for loop. DO NOT use try loop! DO NOT use null. Avoid using breaks!

Tracking Customers

This program will read in a series of names, along with an associated gender, from an input file of unknown length.
The program uses a while loop to read in each name from the file by using the hasNextLine() method from the Scanner class.
- Please use a while loop for practice, although you could also write this assignment using a for loop to read from the file.
As you read in each name, you will store it in an array, along with a title (Mr. or Ms. or Mx.) dependent on the stated gender.
The first line of each file will contain the number of names contained in the file (hint: this is the same structure as the input file in your assignment 18.2).
Additionally, this program should have two methods, as follows:
The first method:
- The method is named extractInitial
- It takes a String parameter
- It extracts the first letter (initial) from the String parameter
- It returns a char for the initial.
- Note: You must write a complete Javadoc for this method to receive full credit.
The second method:
- The method is named printArray
- It takes an array of Strings as a parameter
- It has a second String parameter which is a file name
- It opens up a new PrintWriter and connects it to the file passed in as a parameter
- It prints out the array to the file using a for loop
- It closes the PrintWriter
- It returns nothing
- Hint: You will need to update the method signature to throw an IOException.
- Note: You must write a complete Javadoc for this method to receive full credit.
Part of the trick of this assignment will be to determine the appropriate time to call each method.
Copy and paste the starter code below into a new file called TrackCustomers.java

/**
* @author
*
*/
import java.util.Scanner;

//add an import statement here

public class TrackCustomers

{
   /**
   * Write the javadoc comment for extractInitial here
   */
   public static char extractInitial(String customer)
   {
       return '\0'; //replace this line when you write the method
   }

   /**
   * Write the javadoc comment for printArray here
   */
   public static void printArray(String[] customers) //update signature of method
   {
       return;
   }

   public static void main(String[] args)
   {

String first_name, last_name, gender;

final int ARRAY_SIZE;

final String INPUT_FILE;

final String OUTPUT_FILE;

System.out.println("Welcome to Customer Tracker!\n");

       //Use a while loop and hasNextLine() - required!


   }
}

Sample output:

Welcome to Customer Tracker!

Enter the name of the input file: customers1.txt

Enter the name of the output file: updated.txt

Thank you! The customer information has been written to updated.txt!

Please open the file to see the information.

Note that the user should be able to enter any files names they want. The above file names are just an example.

Example input file:

Barbara Stanton
F
Timoteo Martinez

Ally Gu

Xing Xiao

Dung Kim

Tanya White

Alan Ngo

Abir Fadel

Nataly Luna

Charles Atkinson

Stacey Cahill

Stephanie Teatro

Ping Li

June Park

Binh Nguyen

Corresponding output file:

Ms. B. Stanton
Mr. T. Martinez
Mx. A. Gu
Mr. X. Xiao
Ms. D. Kim
Ms. T. White
Mr. A. Ngo
Mr. A. Fadel

Ms. N. Luna

Mr. C. Atkinson

Mx. S. Cahill

Ms. S. Teatro

Mr. P. Li

Ms. J. Park

Mr. B. Nguyen

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.