Question

Write a java class that obtains an integer value from a customer that represents the number of photocopies to be printed. Then, calculate and display the total job cost. Your "if" test will determine whether or not there are more than 50 copies involved.

You will need to use the DecimalFormat class to obtain the proper number of decimal places shown in the output sample. Review Notes 3.

Base your calculations on these rates: the cost for up to and including 50 copies is $0.07 per copy. Copies in excess of 50 copies cost $0.04 per copy, plus the cost of the first 50 at the $0.07 rate.

Example: 56 copies would cost .07 x 50 + .04 x 6 = $3.50 + $0.24 = $3.74 (these are the actual numeric results)

Algorithm and coding considerations:

Declare one input-capture variable to store the total number of copies desired. Name it iCopies.

Declare another variable to store the calculated number of copies over 50. Name it iCopiesOver50.

Declare one (and only one) variable named dCost to use as the expression-result variable when calculating cost. It CAN be done: dCost can be accumulated.

Use the if block's true branch for copies <= 50 and the false branch for copies greater than 50.

Output the total cost within each branch (i.e., repeat the output statement in the <= 50 branch as well as the > 50 branch). Using this approach, all the output will occur INSIDE the if block.

Answer 1

import java.text.DecimalFormat;

import java.util.Scanner;

public class Tester3{

      public static void main(String args[] ){

            Scanner scan = new Scanner(System.in);

            //Getting the input from user

            System.out.print("Enter the number of phoocopies to be printed: ");

            int iCopies = scan.nextInt();

            int iCopiesOver50=0;

            double dCost=0;

            //Using DecimalFormat to display the output to 2 decimal places

            DecimalFormat df = new DecimalFormat();

            df.setMaximumFractionDigits(2);

            //Using if condition to validate the user input

            if(iCopies>50){

                  iCopiesOver50 = iCopies-50;

                  dCost = 50*0.07 + iCopiesOver50*0.04;

                  System.out.println("Total cost to print: "+df.format(dCost)+"$");

            }

            else{

                  dCost = iCopies*0.07;

                  System.out.println("Total cost to print: "+df.format(dCost)+"$");

            }

            scan.close();

      }

}

Output: