We need to change the Dispenser.java program, so the 2 issues do not come up.

2 issues are ->Coint counting

->computation of the total

Dispeser is the ONLY program that needs to be changed.

when you run the 3 programs, and ask for $2.08, but instead you get 2.07999 , how would you fix these issues..

I dont know how els to ask.

-For each denomination, what is the maximum number of coins that this machine may dispense? Explain why.

//the odd pennies are incorrect

//Dispenser class

public class Dispenser {

public Teller.Result dispense(double request) {

int dollars = (int)request;

double remainder1 = request - dollars;

int quarters = (int)(remainder1 / 0.25);

double remainder2 = remainder1 - quarters * 0.25;

int dimes = (int)(remainder2 / 0.10);

double remainder3 = remainder2 - dimes * 0.1;

int nickels = (int)(remainder3 / 0.05);

double remainder4 = remainder3 - nickels * 0.05;

int pennies = (int)(remainder4 / 0.01);

double remainder5 = remainder4 - pennies * 0.01;

int coins[] = {dollars, quarters, dimes, nickels, pennies};

double total = coins[0] * 1.0 + coins[1] * 0.25 + coins[2] * 0.1 + coins[3] * 0.05 + coins[4] * 0.01;

return new Teller.Result(coins, total);

}

}

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//Teller

import java.math.RoundingMode;

import java.text.DecimalFormat;

import java.util.Scanner;

public class Teller {

String inputs = null;

private Teller() {}

public Teller(String args[]) {

String data = "";

for (String s : args) {

data += s + " ";

}

if (data.trim().length()>0) inputs = data.trim();

}

double getInput(Scanner in) {

if (inputs==null)

System.out.print("Enter an amount (truncated to 2 decimal places): ");

else if (!in.hasNext())

return 0;

double value = in.nextDouble();

DecimalFormat df = new DecimalFormat(".##");

df.setRoundingMode(RoundingMode.DOWN);

double request = Double.parseDouble(df.format(value));

System.out.println("You have requested $" + request);

return request;

}

void report(int coins[], double actual, double request) {

// Report results.

System.out.print("Dispensing:");

System.out.print(" " + coins[0] + " dollars");

System.out.print(" " + coins[1] + " quarters");

System.out.print(" " + coins[2] + " dimes");

System.out.print(" " + coins[3] + " nickels");

System.out.print(" " + coins[4] + " pennies");

System.out.println(" Total dispensed = $" + actual);

if (actual==request)

System.out.println("Correct.");

else

System.out.println("Incorrect.");

}

public void operate() {

Scanner in;

if (inputs!=null)

in = new Scanner(inputs);

else

in = new Scanner(System.in);

Dispenser dispenser = new Dispenser();

double request = getInput(in);

while (request>0.0) {

Result result = dispenser.dispense(request);

report(result.coins, result.total, request);

request = getInput(in);

}

}

public static class Result {

int coins[];

double total;

private Result() {}

public Result(int coins[], double total) {

this.coins = coins;

this.total = total;

}

}

public static void main(String[] args) {

Teller teller = new Teller(args);

teller.operate();

}

}

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//tester

import java.text.DecimalFormat;

public class Test {

static void test1() {

int count = 0;

double start = 0.01;

double end = 100.00;

double interval = 0.01;

count = (int) (Math.ceil((end-start)/interval)) + 1;

DecimalFormat df = new DecimalFormat(".##");

String requests[] = new String[count];

for (int i=0; i

requests[i] = df.format(start + i*interval);

}

Teller teller = new Teller(requests);

teller.operate();

}

static void test2() {

int count = 100;

double start = Integer.MAX_VALUE;

double end = Integer.MAX_VALUE * (1+0.25+0.1+0.05+0.01);

double interval = (end-start)/(count-1);

DecimalFormat df = new DecimalFormat(".##");

String requests[] = new String[count];

for (int i=0; i

requests[i] = df.format(start + i*interval);

}

Teller teller = new Teller(requests);

teller.operate();

}

public static void main(String[] args) {

if (args.length==1 && args[0].equals("1"))

test1();

else if (args.length==1 && args[0].equals("2"))

test2();

else { // default: run all.

test1();

test2();

}

}

}

There are 2 major errors in the dispenser unit. The first is coin counting. The second is the computation of the total. Correct these errors and submit the Dispenserjava module. Before you submit your program, please make sure to test your work using the driver provided. You should not modify the other modules. For each denomination, what is the maximum number of coins that this machine may dispense? Explain why