Java Program to show money change in dollars, quarters etc

In this example we are going to look at the java program which will enable us to enter the money received by the customer and will populate the remaining amount to be given to the customer.

import java.util.Scanner;

public class MakeChange {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        int price;
        int provided;
        int change;
        System.out.print("Enter the purchase price:");
        price = (int) Math.round(keyboard.nextDouble() * 100);
        System.out.print("Enter the amount given by the customer:");
        provided = (int) Math.round(keyboard.nextDouble() * 100);
        
        if (provided > price) {
            System.out.println("The change is: " + ((provided - price)/100.00));
            System.out.println("The customer should be given the change as follows:");
            change = provided - price;
            // Since you multiplied by 100 you have to divide by 2000 to get the
            // number of twenties for change.
            int twenties = change / 2000;
            
            if (twenties > 0) { // if the change is less than $20 this will be a 0
                change = change % 2000; // this resets the value of change to
                // the remainder after the twenties are
                // calculated but only if there was at
                // least enough to make one twenty
                System.out.println(twenties + " $20 bill(s)");
            }
            
            int tens = change / 1000;
            if (tens > 0) {
                change = change % 1000;
                System.out.println(tens + " $10 bill(s)");
            }
            
            int fives = change / 500;
            if (fives > 0) {
                change = change % 500;
                System.out.println(fives + " $5 bill(S)");
            }
            
            int ones = change / 100;
            if (ones > 0) {
                change = change % 100;
                System.out.println(ones + " $1 bill(s)");
            }
            
            int quarters = change / 25;
            if (quarters > 0) {
                change = change % 25;
                System.out.println(quarters + " quarter coin(s)");
            }
            
            int dimes = change / 10;
            if (dimes > 0) {
                change = change % 10;
                System.out.println(dimes + " dime coin(s)");
            }
            
            int nickels = change / 5;
            if (nickels > 0) {
                change = change % 5;
                System.out.println(nickels + " nickel coin(s)");
            }
            int pennies = change;
            System.out.println(pennies + " penny coin(s)");
        }
        if (provided < price) { // this statement is saying that if the customer
            // doesn't pay enough, it will tell the user
            System.out.print("Not enough money!");
        } else if (provided == price) { // this statement says if the amount
            // provided matches the price, then
            // there is no change necessary
            System.out.print("No change is necessary!");
        }
    }
}

Output: