Write a Java program to calculate your cell phone bill given the number of minut

Question

Write a Java program to calculate your cell phone bill given the number of minutes used. Customers pay a basic of $19.99 a month. The basic includes 200 peak minutes and 500 evening minutes. The charge for going over the peak is S0.30/minute and the evening minutes is S0.15/minute. Your program should input the peak minutes and evening minutes used from the command-line arguments. A sample run of the program is as follow: Command Prompt D: MyJava> java PhoneBil1 300 600 Monthly bill = $64.99 D: MyJava> java PhoneBil1 100 300 Monthly bill = $19.99

Explanation / Answer

import java.io.*;

public class PhoneBill
{
    public static void main(String args[])
    {
        //if arguments provided less than 2 exit printing error message
        if(args.length < 2)
        {
            System.out.println("Please provide peak minutes and evening minutes");
            System.exit(1);
        }

        //variables for Peak Minutes and Evening Minutes
        int peakMinutes, eveningMinutes;
        //basic bill
        double bill = 19.99;
        //try to parse peak and evening minutes from argumets
        //if fails show an error
        try {
            // Parse the string arguments into an integer value.
            peakMinutes = Integer.parseInt(args[0]);
            eveningMinutes = Integer.parseInt(args[1]);

            //if peakmiutes greater than 200 these should be included in bill
            //else not
            if (peakMinutes > 200) peakMinutes = peakMinutes - 200;
            else peakMinutes = 0;
            //if evening minutes are more than 500 should be counted in bill
            //else not
            if (eveningMinutes > 500) eveningMinutes = eveningMinutes - 500;
            else eveningMinutes = 0;
            //calculate the bill with extra minutes
            bill = bill + peakMinutes * 0.30 + eveningMinutes * 0.15;
            //Print the calculated bill
            System.out.println("Monthly bill = $" + bill);

        }
        catch (NumberFormatException nfe) {
            //if arguments are not integers print error message and exit
            System.out.println("Both arguments must be integers.");
            System.exit(1);
        }

    }
}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.