Question

Internet Service provider Part 1 (Java Program)

An Internet service provider has three different subscription packages for its customers:

Package A: For $9.95 per month 10 hours of access are provided. Additional hours are $2.00 per hour.

Package B: For $13.95 per month 20 hours of access are provided. Additional hours are $1.00 per hour.

Package C: For $19.95 per month unlimited access is provided.

Write a program that calculates a customer’s monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display the total charges.

Part 2

Modify the program you wrote for Part 1 so it also calculates and displays the amount of money Package A customers would save if they purchased Package B or C, the amount of money Package B customers would save if they purchased Package A or Package C, and the amount of money Package C customers would save if they purchased Package A or Package B . If there would be no savings, no message should be printed.

Answer 1

Answer 1:

import java.util.Scanner;

public class MonthlyBillCalculator {
   public static void main(String[] args) {

       // scanner to read data from user
       Scanner sc = new Scanner(System.in);
       char Package;
       double hoursUsed;
       double monthlyBill = 0;
       // starting infinite loop to get valid inputs from user
       while (true) {

           // reading type of package from user
           System.out.print("Enter Package (A/B/C) :");
           Package = sc.next().charAt(0);
           // reading data from user
           System.out.print("Enter number of hours used :");
           hoursUsed = sc.nextDouble();
           // checking if inputs are valid than comes out of the loop
           if ((Package == 'A' || Package == 'B' || Package == 'C') && (hoursUsed >= 0 && hoursUsed <= 50)) {
               break;
           } else {
               System.out.println("\nInvalid Input\n\nEnter the details again\n--------------------");
           }
       }
       // starting to switch to calculate based user selected package
       switch (Package) {
       // if selected type is A
       case 'A':
           if (hoursUsed <= 10) {
               monthlyBill = 9.95;
           } else {
               monthlyBill = 9.95 + ((hoursUsed -10) * 2);
           }
           break;
       case 'B':
           if (hoursUsed <= 10) {
               monthlyBill = 13.95;
           } else {
               monthlyBill = 13.95 + ((hoursUsed - 20) * 1);
           }
           break;
       case 'C':
           monthlyBill = 19.95;
           break;
       }
       System.out.printf("\nMonthly bill = $%.2f\n", monthlyBill);
       // based on usage suggesting Package type for user
      
   }
}

Answer 2:

import java.util.Scanner;

public class MonthlyBillCalculator {
   public static void main(String[] args) {

       // scanner to read data from user
       Scanner sc = new Scanner(System.in);
       char Package;
       double hoursUsed;
       double monthlyBill = 0;
       // starting infinite loop to get valid inputs from user
       while (true) {

           // reading type of package from user
           System.out.print("Enter Package (A/B/C) :");
           Package = sc.next().charAt(0);
           // reading data from user
           System.out.print("Enter number of hours used :");
           hoursUsed = sc.nextDouble();
           // checking if inputs are valid than comes out of the loop
           if ((Package == 'A' || Package == 'B' || Package == 'C') && (hoursUsed >= 0 && hoursUsed <= 50)) {
               break;
           } else {
               System.out.println("\nInvalid Input\n\nEnter the details again\n--------------------");
           }
       }
       // starting to switch to calculate based user selected package
       switch (Package) {
       // if selected type is A
       case 'A':
           if (hoursUsed <= 10) {
               monthlyBill = 9.95;
           } else {
               monthlyBill = 9.95 + ((hoursUsed - 10) * 2);
           }
           System.out.printf("\nMonthly bill = $%.2f\n", monthlyBill);
           if (monthlyBill > 19.5) {
               System.out.println("If you take Package C than you could have saved " + (monthlyBill - 19.95));
           }
           else if (monthlyBill > 13.95) {
               System.out.println("If you take Package B than you could have saved " + (monthlyBill - 13.95));
           }
           break;
       case 'B':
           if (hoursUsed <= 10) {
               monthlyBill = 13.95;
           } else {
               monthlyBill = 13.95 + ((hoursUsed - 20) * 1);
           }
           System.out.printf("\nMonthly bill = $%.2f\n", monthlyBill);
           if (monthlyBill > 19.5) {
               System.out.println("If you take Package C than you could have saved " + (monthlyBill - 19.95));
           }
           break;
       case 'C':
           monthlyBill = 19.95;
           break;
       }
       System.out.printf("\nMonthly bill = $%.2f\n", monthlyBill);
       // based on usage suggesting Package type for user

   }
}

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