Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Below is a working Name class with the following behavior: Constructor A getFormal method that returns the first name followed by the last name (separated

Below is a working Name class with the following behavior:

Constructor

A getFormal method that returns the first name followed by the last name (separated by a space)

A getOfficial method that returns the last name followed by a comma (and space), followed by the first name

toString and equals methods

A class (i.e., static) method named read that is passed a Scanner object and returns a Name object created f rom data (last and first names) read in from the scanner.

A main method that reads in Name objects, prints out the formal and official versions of the name and keeps count of how many names were processed.

import java.io.*;import java.util.*;class Name { public Name(String last, String first) { this.last = last; this.first = first; } public Name(String first) {this(\"\", first);} public String getFormal() {return first + \" \" + last;} public String getOfficial() {return last + \", \" + first;} public boolean equals(Name other) {return first.equals(other.first) && last .equals(other.last);} public String toString() {return first + \" \" + last;} public static Name read(Scanner scanner) { if (!scanner.hasNext()) return null; String last = scanner.next(); String first = scanner.next(); return new Name(last, first); } private String first, last; public static void main(String [] args) throws Exception { Scanner scanner = new Scanner(new File(\"names.text\")); int count = 0; Name name = read(scanner); while(name != null) { System.out.println(\"formal: \" + name.getFormal()); System.out.println(\"official: \" + name.getOfficial()); System.out.println(); count++; name = read(scanner); } System.out.println(\"---\"); System.out.println(count + \" names processed.\"); }}

Your job is to make the following changes:

Add a getInitials method that returnd a string consisting of the first and last initials, each followed by a period ('.').

Add the following logic to main:

Print out the Name object resd in using the toString method

Print out the Name's initials (using the getInitials method).

Add logic so that if two consecutive names match, and error message is printed.

The name of your class should be Name. Plase remove the public attribute from your class definition (CodeLab restriction).

For example, if the file names.text contains:

Edwards Steven Carter Joshua Carter Joshua Jackson Anthony Carter Barbara Evans Edward White Christopher White Christopher Taylor Michelle Baker Melissa Young Anthony Hall Michael

the program should produce the following output:

name: Steven Edwardsformal: Steven Edwardsofficial: Edwards, Steveninitials: S.E.name: Joshua Carterformal: Joshua Carterofficial: Carter, Joshuainitials: J.C.Duplicate name \"Joshua Carter\" discoveredname: Anthony Jacksonformal: Anthony Jacksonofficial: Jackson, Anthonyinitials: A.J.name: Barbara Carterformal: Barbara Carterofficial: Carter, Barbarainitials: B.C.name: Edward Evansformal: Edward Evansofficial: Evans, Edwardinitials: E.E.name: Christopher Whiteformal: Christopher Whiteofficial: White, Christopherinitials: C.W.Duplicate name \"Christopher White\" discoveredname: Michelle Taylorformal: Michelle Taylorofficial: Taylor, Michelleinitials: M.T.name: Melissa Bakerformal: Melissa Bakerofficial: Baker, Melissainitials: M.B.name: Anthony Youngformal: Anthony Youngofficial: Young, Anthonyinitials: A.Y.name: Michael Hallformal: Michael Hallofficial: Hall, Michaelinitials: M.H.---12 names processed.

My code:

import java.io.*;

import java.util.*;

class Name {

public Name(String last, String first) {

this.last = last;

this.first = first;

}

public Name(String first) {this(\"\", first);}

public String getFormal() {return first + \" \" + last;}

public String getOfficial() {return last + \", \" + first;}

public boolean equals(Name other) {return first.equals(other.first) && last .equals(other.last);}

public String toString() {return first + \" \" + last;}

public static Name read(Scanner scanner) {

if (!scanner.hasNext()) return null;

String last = scanner.next();

String first = scanner.next();

return new Name(last, first);

}

public String getInitials() {

return Character.toUpperCase(first.charAt(0)) + \".\" + Character.toUpperCase(last.charAt(0))+\".\";

}

private String first, last;

public static void main(String [] args) throws Exception {

Scanner scanner = new Scanner(new File(\"names.text\"));

int count = 0;

Name name = read(scanner);

while(name != null) {

System.out.println(\"name: \" + name);

System.out.println(\"formal: \" + name.getFormal());

System.out.println(\"official: \" + name.getOfficial());

System.out.println(\"initials: \" + name.getInitials());

System.out.println();

count++;

name = read(scanner);

}

System.out.println(\"---\");

System.out.println(count + \" names processed.\");

}

}

Duplicate name \"Christopher White\" discovered when the same name is scanned.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Introduction To Programming With Java A Problem Solving Approach

Authors: John Dean

3rd International Edition

1260575241, 9781260575248

More Books

Students also viewed these Programming questions