Output error in Java. Hope for assistance.

Question

I am using Java in BlueJ and I am fairly new to it. I am nearing the end of my program but I seem to have run into a snag. I don't get any syntax errors but when running the program it gives me an error.

The purpose of this program is to read a .TXT file and based on the information in that, create a new .TXT file with new information.

Here is the only class, Program3:

import java.io.*;
import java.util.*;

public class Program3 {
    public static void main(String[] args) {
        int  sales;
        String  name;
        double  baseSalary, commission, overCommission, underCommission, salary;
        Scanner  infile;
        PrintWriter  outfile;

        try {infile = new Scanner(new FileReader("PROG3IN.TXT"));}
        catch (IOException err) {
            infile = null;
            System.out.println("Cannot open PROG3IN.TXT.");
            System.exit(1);
        }

        try {outfile = new PrintWriter(new FileWriter("REPORT.TXT"));}
        catch (IOException err) {
            outfile = null;
            System.out.println("Cannot create REPORT.TXT.");
            System.exit(1);
        }

        outfile.printf
            ("Salesman        Sales       Commission      Salary%n");

        while (infile.hasNext()) {
            name = infile.next();
            sales = infile.nextInt(); //ERROR

            if (sales > 1000.00) {
                overCommission = sales - 1000.00;
                overCommission = overCommission * .08;
                underCommission = 1000.00 * .05;
                commission = overCommission + underCommission;
            } else
                commission = sales * .05;

            commission = Math.rint(commission * 100.00) / 100.00;
            baseSalary = 200.00;
            salary = baseSalary + commission;

            outfile.printf("%-12s %11.2f %11.2f %11.2f%n",
            name, sales, commission, salary);

        }
        infile.close();
        outfile.close();
    }
}

During the running of the program, I am getting an error on the line:

sales = infile.nextInt();

According to BlueJ, this is the problem:

java.until.InputMismatchException;
null (in.java.util.Scanner)

For clarity, this is what PROG3IN.TXT contains:

COSTA          1000.00
LOMBARDI        852.16
MARTINEZ       1043.57
THOMAS          714.23
YOUNG          1104.95

Note: PROG3IN.TXT is in fact in the source file of the program, so that is not the issue.

This is what is supposed to be in the .TXT file REPORT.TXT that is created when running the program aka my output:

Salesman         Sales     Commission     Salary
COSTA          1000.00        50.00       250.00
LOMBARDI        852.16        42.61       242.61
MARTINEZ       1043.57        53.49       253.49
THOMAS          714.23        35.71       235.71
YOUNG          1104.95        58.40       258.40

Just in case more clarity is required, this is the specific task at hand:

Each salesman for a small company earns a weekly base salary of
$200.00 plus a commission.  The commission is 5 percent of sales
for sales of up to $1000.00.  The commission is 8 percent on
sales in excess of $1000.00.  Thus for $800.00 in sales a
salesman earns a base salary of $200.00, plus a commission of
$40.00, for a total salary of $240.00.  For $1200.00 in sales a
salesman earns a base salary of $200.00, plus a commission of
$50.00 on the first $1000.00 of sales, plus a commission of
$16.00 on the remaining $200.00 of sales, for a total salary of
$266.00.

Write a program which computes the commission and salary for
each salesman in the company.   Round each commission to the
nearest cent before adding it to the base salary.  The data file
PROG3IN.TXT  contains one line of data for each salesman
containing the last name and the sales for the week.  Process
this data file and print a report in the following format.

I can't seem to figure out how to overcome this obstacle, so I hope someone can assist me here. If anyone sees any potential errors other than what I'm asking for feel free to point them out. It would be greatly appreciated. Thank you in advance.

Answer 1

Your data file contains data of type double, not int. Change the variable type of sales to double, and use scanner.nextDouble() instead of nextInt().

double sales;

...

sales = infile.nextDouble();