I am noob to Java and I am trying write a program that gives the amount of change given two dollar inputs. I cannot figure out what is going on. I am specifically having trouble trying to output the coinage. So for example if a person owed $654.32 and paid $987 their change should be $332.68 which would be 2 quarters, 1 dime, 1 nickel, and 3 pinnies.
Any help is greatly appreciated!
import java.util.*;
import java.math.*;
import java.text.*;
public class CorrectChange {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
BigDecimal AmtDue;
BigDecimal AmtPaid;
NumberFormat n = NumberFormat.getCurrencyInstance(Locale.US);
//User enters the amount that the customer owes
System.out.println("Enter the amount below that is due to be paid.");
System.out.print("$");
AmtDue = input.nextBigDecimal();
//Converts user's input into the currency format
AmtDue = AmtDue.setScale(2, BigDecimal.ROUND_HALF_UP);
double dAmtDue = AmtDue.doubleValue();
String eAmtDue = n.format(dAmtDue);
//User enters the amount that the customer paid
System.out.println("Enter the amount below that has been paid.");
System.out.print("$");
AmtPaid = input.nextBigDecimal();
//Converts user's input into the currency format
AmtPaid = AmtPaid.setScale(2, BigDecimal.ROUND_HALF_UP);
double dAmtPaid = AmtPaid.doubleValue();
String eAmtPaid = n.format(dAmtPaid);
//Checks to see if the amount paid is more than the amount owed
if (AmtDue.compareTo(AmtPaid)> 0){
double dBal = AmtDue.subtract(AmtPaid).doubleValue();
String eBal = n.format(dBal);
System.out.println("You still owe: " + eBal.toString());
}
//Checks to see if the amount owed is more than the amount paid
if (AmtDue.compareTo(AmtPaid)< 0){
int cBal = (AmtPaid.compareTo(AmtDue)*100);
double dBal = AmtPaid.subtract(AmtDue).doubleValue();
String eBal = n.format(dBal);
int DolBills = (int) (dBal / 1);
dBal = dBal % 1;
int quarters = (int) (dBal / 25);
dBal = dBal % 25;
int dimes = (int) (cBal / 10);
cBal = cBal % 10;
int nickles = (int) (cBal / 5);
cBal = cBal % 5;
//pennies = (int) (dBal / 100);
//dBal = dBal % 100;
System.out.println("You owe a balance of " + eAmtDue.toString() + ". Since you paid the amount of " + eAmtPaid.toString() + " your change is " + eBal.toString());
System.out.println("Your change amount is as follows:\n" +
"\t" + DolBills + " $1 dollar bills \n" +
"\t" + quarters + " quarters \n" +
"\t" + dimes + " dimes \n" +
"\t" + nickles + " nickels \n");
"\t" + numPennies + " pennies";
}
//Checks to see if the amount paid is equal to the amount owed
if (AmtDue.compareTo(AmtPaid)== 0){
System.out.println("Your balance has been paid. Thank you for your business.");
}
}
You were nearly there, you got a bit mixed up with cBal and dBal. And the conversion of change to their .XX value.
The correct version is below
import java.util.*;
import java.math.*;
import java.text.*;
public class CorrectChange {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
BigDecimal AmtDue;
BigDecimal AmtPaid;
NumberFormat n = NumberFormat.getCurrencyInstance(Locale.US);
//User enters the amount that the customer owes
System.out.println("Enter the amount below that is due to be paid.");
System.out.print("$");
AmtDue = input.nextBigDecimal();
//Converts user's input into the currency format
AmtDue = AmtDue.setScale(2, BigDecimal.ROUND_HALF_UP);
double dAmtDue = AmtDue.doubleValue();
String eAmtDue = n.format(dAmtDue);
//User enters the amount that the customer paid
System.out.println("Enter the amount below that has been paid.");
System.out.print("$");
AmtPaid = input.nextBigDecimal();
//Converts user's input into the currency format
AmtPaid = AmtPaid.setScale(2, BigDecimal.ROUND_HALF_UP);
double dAmtPaid = AmtPaid.doubleValue();
String eAmtPaid = n.format(dAmtPaid);
//Checks to see if the amount paid is more than the amount owed
if (AmtDue.compareTo(AmtPaid)> 0){
double dBal = AmtDue.subtract(AmtPaid).doubleValue();
String eBal = n.format(dBal);
System.out.println("You still owe: " + eBal.toString());
}
//Checks to see if the amount owed is more than the amount paid
if (AmtDue.compareTo(AmtPaid)< 0){
double dBal = AmtPaid.subtract(AmtDue).doubleValue();
String eBal = n.format(dBal);
int DolBills = (int) (dBal / 1);
dBal = dBal % 1.0;
int quarters = (int) (dBal / .25);
dBal = dBal % .25;
int dimes = (int) (dBal / .10);
dBal = dBal % .10;
int nickles = (int) (dBal / .05);
dBal = dBal % .05;
int numPennies = (int) (dBal / .01);
//dBal = dBal % 0.01;
System.out.println("You owe a balance of " + eAmtDue.toString() + ". Since you paid the amount of " + eAmtPaid.toString() + " your change is " + eBal.toString());
System.out.println("Your change amount is as follows:\n" +
"\t" + DolBills + " $1 dollar bills \n" +
"\t" + quarters + " quarters \n" +
"\t" + dimes + " dimes \n" +
"\t" + nickles + " nickels \n" +
"\t" + numPennies + " pennies");
}
//Checks to see if the amount paid is equal to the amount owed
if (AmtDue.compareTo(AmtPaid)== 0){
System.out.println("Your balance has been paid. Thank you for your business.");
}
}
}
You should definitely read up on java naming and coding conventions.