Answered! Book:- Java An introdcution to problem solving and programming 7ed plz give the write code in Java Chapter 6:…

import java.util.Scanner;

public class VoteRecorderDemo {

/*————————————————————-
| Method: [main]
|
| Purpose: [To create a demo of VoteRecorder and run a mock election to determine which candidates will win
the presidential and vice-presidential races]
|
| Pre-condition: [The VoteRecorder class must have all the necessary methods to run a mock election and
determine the winner]
|
| Post-condition: [Program will display which candidates won each election]
|
| Parameters: [N/A]
|
| Returns: [N/A]
*——————————————————————*/

public static void main(String[] args) {
VoteRecorder.setCandidatesPresident(“Annie”, “Bob”);
VoteRecorder.setCandidatesVicePresident(“John”, “Susan”);
System.out.println(“How many voters are there in this election?: “);
Scanner voters = new Scanner(System.in);
int voterCount = voters.nextInt();
while (voterCount < 0)
{
System.out.println(“Error. Please enter a positive number of voters: “);
voterCount = voters.nextInt();
}
for (int i = 0; i < voterCount; i++)
{
VoteRecorder election = new VoteRecorder();
election.getAndConfirmVotes();
System.out.println(“Thank you voter number: ” + (i + 1) + “n”);
}
VoteRecorder.displayResults();
voters.close();
}

}

VoteRecorder.java

import java.util.Scanner;

public class VoteRecorder {

// Initialize variables
static String nameCandidatePresident1;
static String nameCandidatePresident2;
static String nameCandidateVicePresident1;
static String nameCandidateVicePresident2;
static int votesCandidatePresident1;
static int votesCandidatePresident2;
static int votesCandidateVicePresident1;
static int votesCandidateVicePresident2;
private int myVoteForPresident;
private int myVoteForVicePresident;
private boolean inputYes = true;

//Constructor with votes already in
public VoteRecorder(int myVoteForPresident, int myVoteForVicePresident) {
this.myVoteForPresident = myVoteForPresident;
this.myVoteForVicePresident = myVoteForVicePresident;
if (myVoteForPresident == 1)
{
votesCandidatePresident1++;
}
else if (myVoteForPresident == 2)
{
votesCandidatePresident2++;
}
if (myVoteForVicePresident == 1)
{
votesCandidateVicePresident1++;
}
else if (myVoteForPresident == 2)
{
votesCandidateVicePresident2++;
}
}

// Default constructor
public VoteRecorder()
{

}

/*————————————————————-
| Method: [setCandidatesPresident(String name1, String name2)]
|
| Purpose: [This method sets the names of the candidates for presidential race]
|
| Pre-condition: [Takes in argument String name1, name2.]
|
| Post-condition: [The names of the presidential candidates will be set.]
|
| Parameters:
|      nameCandidatePresident1 – first candidate’s name
nameCandidatePresident2 – second candidate’s name
|
| Returns: [N/A]
*——————————————————————*/

public static void setCandidatesPresident(String name1, String name2)
{
nameCandidatePresident1 = name1;
nameCandidatePresident2 = name2;
}

/*————————————————————-
| Method: [setCandidatesVicePresident(String name1, String name2)]
|
| Purpose: [This method sets the names of the candidates for vice-presidential race]
|
| Pre-condition: [Takes in argument String name1, name2.]
|
| Post-condition: [The names of the vice-presidential candidates will be set.]
|
| Parameters:
|      nameCandidateVicePresident1 – first candidate’s name
nameCandidateVicePresident2 – second candidate’s name
|
| Returns: [N/A]
*——————————————————————*/

public static void setCandidatesVicePresident(String name1, String name2)
{
nameCandidateVicePresident1 = name1;
nameCandidateVicePresident2 = name2;
}

/*————————————————————-
| Method: [resetVotes()]
|
| Purpose: [To reset the vote count of the two races back to 0]
|
| Pre-condition: [Have parameters defined]
|
| Post-condition: [The votes for every candidate will be 0]
|
| Parameters:
|      votesCandidatePresident1 – first candidate’s votes
votesCandidatePresident2 – second candidate’s votes
votesCandidateVicePresident1 – first vp candidate’s votes
votesCandidateVicePresident2 – second vp candidate’s votes
|
| Returns: [N/A]
*——————————————————————*/

public static void resetVotes()
{
votesCandidatePresident1 = 0;
votesCandidatePresident2 = 0;
votesCandidateVicePresident1 = 0;
votesCandidateVicePresident2 = 0;
}

/*————————————————————-
| Method: [getCurrentVotePresident()]
|
| Purpose: [This method gets the number of votes for the presidential race]
|
| Pre-condition: [Have parameters defined]
|
| Post-condition: [returns the vote for each presidential candidate]
|
| Parameters:
|      nameCandidatePresident1 – first candidate’s name
nameCandidatePresident2 – second candidate’s name
votesCandidatePresident1 – first candidate’s votes
votesCandidatePresident2 – second candidate’s votes
|
| Returns: [returns the vote for each presidential candidate]
*——————————————————————*/

public static String getCurrentVotePresident()
{
return “The first presidential candidate” + nameCandidatePresident1 + “has” + votesCandidatePresident1 + “votes and the second presidential canddiate” + nameCandidatePresident2 + “has” + votesCandidatePresident2 + “votes”;
}

/*————————————————————-
| Method: [getCurrentVoteVicePresident()]
|
| Purpose: [This method gets the number of votes for the vice-presidential race]
|
| Pre-condition: [Have parameters defined]
|
| Post-condition: [returns the vote for each vice-presidential candidate]
|
| Parameters:
|      nameCandidateVicePresident1 – first vp candidate’s name
nameCandidateVicePresident2 – second vp candidate’s name
votesCandidateVicePresident1 – first vp candidate’s votes
votesCandidateVicePresident2 – second vp candidate’s votes
|
| Returns: [returns the vote for each vice-presidential candidate]
*——————————————————————*/

public static String getCurrentVoteVicePresident()
{
return “The first vice-presidential candidate” + nameCandidatePresident1 + “has” + votesCandidateVicePresident1 + “votes and the second vice-presidential candiate” + nameCandidateVicePresident2 + “has” + votesCandidateVicePresident2 + “votes”;
}

/*————————————————————-
| Method: [getAVote(String name1, name2)]
|
| Purpose: [This method gets a single user’s vote for presidential election]
|
| Pre-condition: [Have parameters defined]
|
| Post-condition: [returns the vote for each vice-presidential candidate]
|
| Parameters:
|      nameCandidateVicePresident1 – first vp candidate’s name
nameCandidateVicePresident2 – second vp candidate’s name
myVoteForPresident – who user voted for
|
| Returns: [returns who the user voted for]
*——————————————————————*/

@SuppressWarnings(“resource”)
private String getAVote(String name1, String name2)
{
nameCandidatePresident1 = name1;
nameCandidatePresident2 = name2;
System.out.println(“To vote for ” + nameCandidatePresident1 + ” for President please enter 1: “);
System.out.println(“To vote for ” + nameCandidatePresident2 + ” for President please enter 2: “);
System.out.println(“To vote for neither candidate, enter 0: “);
Scanner singlePresidentVote = new Scanner(System.in);
myVoteForPresident = singlePresidentVote.nextInt();
return “You’re vote for the presidential race is in. You voted for: ” + myVoteForPresident;
}

/*————————————————————-
| Method: [getVotes()]
|
| Purpose: [This method returns a vote choice for president and vp from an individual]
|
| Pre-condition: [Have parameters defined]
|
| Post-condition: [returns the vote of user for each race]
|
| Parameters:
nameCandidatePresident1 – candidate’s name
nameCandidatePresident2 – second candidate’s name
|      nameCandidateVicePresident1 – first vp candidate’s name
nameCandidateVicePresident2 – second vp candidate’s name
myVoteForPresident – who user voted for president
myVoteForVicePresident – who user voted for vice-president
|
| Returns: [N/A]
*——————————————————————*/

@SuppressWarnings(“resource”)
private void getVotes()
{
System.out.println(“To vote for ” + nameCandidatePresident1 + ” for President please enter 1: “);
System.out.println(“To vote for ” + nameCandidatePresident2 + ” for President please enter 2: “);
System.out.println(“To vote for neither candidate, enter 0: “);
Scanner presidentVote = new Scanner(System.in);
myVoteForPresident = presidentVote.nextInt();
while (myVoteForPresident < 0 || myVoteForPresident > 2)
{
System.out.println(“Error. That is not a valid candidate. Please enter a valid number 0-2: “);
myVoteForPresident = presidentVote.nextInt();
}
System.out.println(“To vote for ” + nameCandidateVicePresident1 + ” for Vice-President please enter 1: “);
System.out.println(“To vote for ” + nameCandidateVicePresident2 + ” for Vice-President please enter 2: “);
System.out.println(“To vote for neither candidate, enter 0: “);
Scanner vicePresidentVote = new Scanner(System.in);
myVoteForVicePresident = vicePresidentVote.nextInt();
while (myVoteForVicePresident < 0 || myVoteForVicePresident > 2)
{
System.out.println(“Error. That is not a valid candidate. Please enter a valid number 0-2: “);
myVoteForVicePresident = vicePresidentVote.nextInt();
}
}

/*————————————————————-
| Method: [getAndConfirmVotes()]
|
| Purpose: [gets an individuals votes, confirms them, then records them]
|
| Pre-condition: [Have methods getVotes(), confirmVotes(), recordVotes(inputYes) defined]
|
| Post-condition: [will process a user’s vote for each race and confirm it, then record it]
|
| Parameters:
|      boolean inputYes – argument for recordVotes() method
|
| Returns: [N/A]
*——————————————————————*/

public void getAndConfirmVotes()
{

getVotes();
confirmVotes();
recordVotes(inputYes);
}

/*————————————————————-
| Method: [confirmVotes()]
|
| Purpose: [To confirm if the user wants to submit his final votes for each candidate by
typing in “yes” or “no”]
|
| Pre-condition: [User must have already input who he wants to vote for]
|
| Post-condition: [Program will confirm user’s votes and record it]
|
| Parameters:
|      boolean inputYes – argument for recordVotes() method
myVoteForPresident – who the user voted for president
myVoteForVicePresident – who the user voted for vice-president
|
| Returns: [N/A]
*——————————————————————*/

@SuppressWarnings(“resource”)
private void confirmVotes()
{
System.out.println(“Your vote for president is: ” + myVoteForPresident);
System.out.println(“Your vote for vice-president is: ” + myVoteForVicePresident);
System.out.println(“Are you happy with these choices? Type yes or no: “);
Scanner input = new Scanner(System.in);
String next = input.next();
if (next.equalsIgnoreCase(“yes”))
{
inputYes = true;
}
else
{
inputYes = false;
}
}

/*————————————————————-
| Method: [recordVotes(boolean inputYes)]
|
| Purpose: [If the user confirmed his votes by typing “yes”, then this method will record
the user’s votes based on who he voted for by entering 0, 1, or 2.]
|
| Pre-condition: [User must have already voted and confirmed his selection by typing “yes”]
|
| Post-condition: [Program will record user’s votes or say his/her votes were discarded if they did not type “yes”]
|
| Parameters:
|      boolean inputYes – argument for recordVotes() method
myVoteForPresident – who the user voted for president
myVoteForVicePresident – who the user voted for vice-president
votesCandidatePresident1 – first candidate’s votes
votesCandidatePresident2 – second candidate’s votes
votesCandidateVicePresident1 – first vp candidate’s votes
votesCandidateVicePresident2 – second vp candidate’s votes
|
| Returns: [N/A]
*——————————————————————*/

private void recordVotes(boolean inputYes)
{
int votePresident = myVoteForPresident;
int voteVicePresident = myVoteForVicePresident;
if (inputYes)
{
if (votePresident == 0)
{
votesCandidatePresident1 += 0;
votesCandidatePresident2 += 0;
}
if (votePresident == 1)
{
votesCandidatePresident1 += 1;
votesCandidatePresident2 += 0;
}
if (votePresident == 2)
{
votesCandidatePresident1 += 0;
votesCandidatePresident2 += 1;
}

if (voteVicePresident == 0)
{
votesCandidateVicePresident1 += 0;
votesCandidateVicePresident2 += 0;
}
if (voteVicePresident == 1)
{
votesCandidateVicePresident1 += 1;
votesCandidateVicePresident2 += 0;
}
if (voteVicePresident == 2)
{
votesCandidateVicePresident1 += 0;
votesCandidateVicePresident2 += 1;
}
}
else
{
System.out.println(“The votes were not counted. Please enter your votes again. n”);
getAndConfirmVotes();
}

}

/*————————————————————-
| Method: [displayResults()]
|
| Purpose: [This will display a message of who won each election based on
which candidates had the more votes]
|
| Pre-condition: [User must have voted, confirmed, and have his vote recorded.]
|
| Post-condition: [Program will display the winners of each race]
|
| Parameters:
votesCandidatePresident1 – first candidate’s votes
votesCandidatePresident2 – second candidate’s votes
votesCandidateVicePresident1 – first vp candidate’s votes
votesCandidateVicePresident2 – second vp candidate’s votes
|
| Returns: [N/A]
*——————————————————————*/

public static void displayResults()
{

if (VoteRecorder.votesCandidatePresident1 > VoteRecorder.votesCandidatePresident2)
{
System.out.println(VoteRecorder.nameCandidatePresident1 + ” has won the Presidential election!”);
}
if (VoteRecorder.votesCandidatePresident2 > VoteRecorder.votesCandidatePresident1)
{
System.out.println(VoteRecorder.nameCandidatePresident2 + ” has won the Presidential election!”);
}
if (VoteRecorder.votesCandidatePresident1 == VoteRecorder.votesCandidatePresident2)
{
System.out.println(“The presidential race has resulted in a tie!”);
}
if (VoteRecorder.votesCandidateVicePresident1 > VoteRecorder.votesCandidateVicePresident2)
{
System.out.println(VoteRecorder.nameCandidateVicePresident1 + ” has won the Vice-Presidential election!”);
}
if (VoteRecorder.votesCandidateVicePresident2 > VoteRecorder.votesCandidateVicePresident1)
{
System.out.println(VoteRecorder.nameCandidateVicePresident2 + ” has won the Vice-Presidential election!”);
}
if (VoteRecorder.votesCandidateVicePresident1 == VoteRecorder.votesCandidateVicePresident2)
{
System.out.println(“The Vice-Presidential race has resulted in a tie!”);
}
}

}