Question

JAVA
*REFER TO THE PICTURES*

Summary Write a program that will calculate the monthly electric charges for a customer given a starting and ending readings from an electric meter. Charges will depend on the actual usage and the results will be displayed to the user Requirements From the user, get the month for the readings From the user, get the starting and ending reading values (in kWh) (integers) Standard rate is 42 cents per kWh Overage rate is 48 cents per kWh If the month is either July, August or September, the rates will be 4 cents higher (standard and overage) The user can enter the month using capitals, lower case, or a mix. So an input of "JULY", "July", or "july" all should be okay. *For all other months, it is optional to validate the name of the month, you may just accept it and move on Validate the meter readings, see the sample runs o a negative reading should produce an error o an ending reading that is less than the beginning should produce an error If meter readings are valid o If the usage is less than 100 kWh, the charges will be calculated at standard rate o If the usage is greater than 100 kWh, the charges for the first 100 kWh will be calculated using the standard rate, and every excess kWh (over the 100) will be calculated at the overage rate o In the summer months, the "standard" and "overage" rates hike and are 4 cents gher Display the charges in USD with 2 decimals Allow the user to enter readings for more months o Keep a running total of each month's charges o Keep a count of how many months were calculated When the user is finished, display a summary of the charges o The total charges for all n months o The total kWh for all n months o The average charge per month o The average kWh per month Match the output shown below. Note that in the sample run with valid input there is a blank line between the input and the displayed computations

Answer 1

import java.util.Scanner;

import java.text.DecimalFormat;

public class ElectricCharges {

      public static void main(String[] args) {

          

        double charges, totalCharges=0, averageCharge;

        int startReading=0, endReading=0, usage, totalUsage=0, avergeUsage, count=0, flag=0;

       

        //Creating object of Scanner class for standard input

        Scanner stdin = new Scanner(System.in);  

        DecimalFormat df = new DecimalFormat(".00");       //used to print output upto 2 decimal places

        String cont = "yes";

        do { //Reading month from user

               System.out.print("Please enter the month for the reading: ");

               String month = stdin.next();

               month = month.toUpperCase(); //Converting into month uppercase

               //Taking input beginning meter reading from user

               System.out.print("Please enter the beginning meter reading: ");

               startReading = stdin.nextInt();

               //validating user input

               if(startReading<=0) {

                      System.out.println("I'm sorry, meter readings must be greater than 0.\n");

                      System.out.print("Would you like to enter another reading? : ");

                      cont = stdin.next();

                      if(cont.equals("yes"))

                             continue;

               }

                //Taking input ending meter reading from user

               if(cont.equals("yes")) {

                     System.out.print("Please enter the ending meter reading: ");

                     endReading = stdin.nextInt();

                     //validating user input

                     if(endReading <= startReading) {

                          System.out.println("I'm sorry, the ending meter readings must be greater than starting meter reading.\n");

                          System.out.print("Would you like to enter another reading? : ");

                          cont = stdin.next();

                          if(cont.equals("yes"))

                             continue;

                     }

                }

                if(cont.equals("yes")) {

                     usage = endReading - startReading;        //calculating usage

                     System.out.println("\nThe usage for this period: "+usage+" kWh");

                     //calculating charges based on condition

                     if(month.equals("JULY") || month.equals("AUGUST") || month.equals("SEPTEMBER") ) {

                           if(usage<=100) {

                                 charges = .46*usage;

                                 System.out.println("The charges for this month for 100 kWh at 46 cents per kWh: $"+df.format(charges)+" USD");

                      }

                      else {

                            charges = .46*100 + .52*(usage-100);

                            System.out.println("The charges for this month for 100 kWh at 46 cents/kWh and "+(usage-100)+" kWh overage at 52 cents/kWh: $"+df.format(charges)+" USD");

                      }

                   }

                  else {

                    if(usage<=100) {

                            charges = .42*usage;

                            System.out.println("The charges for this month for 100 kWh at 42 cents per kWh: $"+df.format(charges)+ " USD");

                      }

                      else {

                            charges = .42*100 + .48*(usage-100);

                            System.out.println("The charges for this month for 100 kWh at 42 cents/kWh and "+(usage-100)+" kWh overage at 48 cents/kWh: $"+df.format(charges)+" USD");

                     }

                  }   

                     

             

                totalUsage = totalUsage + usage;             //calculating total usage

                totalCharges = totalCharges + charges;     //calculating total cjatges

                count++;                                 //counter value to keep track of number of bill input

                flag=1;

                System.out.print("\nWould you like to enter another reading? : ");

                cont = stdin.next();

             }       

               

         }while(cont.equals("yes"));

        

         //Printing total bill details of all months

         if(flag==1) {    

               avergeUsage = totalUsage/count;

               averageCharge = totalCharges/count;

               System.out.print("\nTotal Usage: "+ totalUsage+" kWh.");

               System.out.print(" Total charges for the "+count+" months of readings: $"+ df.format(totalCharges));

               System.out.print(" Your average usage is "+avergeUsage+" kWh, ");

               System.out.println("and your average charge is $"+df.format(averageCharge)+" per month");

        }

     }        

}