Define a class ElectricBill with the following specifications:
class : ElectricBill
Instance variables / data member:
String n — to store the name of the customer
int units — to store the number of units consumed
double bill — to store the amount to be paid
Member methods:
void accept( ) — to accept the name of the customer and number of units consumed
void calculate( ) — to calculate the bill as per the following tariff:
A surcharge of 2.5% charged if the number of units consumed is above 300 units.
void print( ) — To print the details as follows:
Name of the customer: ………………………
Number of units consumed: ………………………
Bill amount: ………………………
Write a main method to create an object of the class and call the above member methods.
ElectricBill - Java Code
Electric Bill Calculator
class : ElectricBill
Instance variables / data member:
String n — to store the name of the customer
int units — to store the number of units consumed
double bill — to store the amount to be paid
Member methods:
void accept( ) — to accept the name of the customer and number of units consumed
void calculate( ) — to calculate the bill as per the following tariff:
| Number of Units | Rate per Unit |
|---|---|
| First 100 units | Rs. 2.00 |
| Next 200 units | Rs. 3.00 |
| Above 300 units | Rs. 5.00 |
A surcharge of 2.5% charged if the number of units consumed is above 300 units.
void print( ) — To print the details as follows:
Name of the customer: ………………………
Number of units consumed: ………………………
Bill amount: ………………………
Write a main method to create an object of the class and call the above member methods.
Answer:
ElectricBill - Java Code
import java.util.Scanner;
public class ElectricBill
{
private String n;
private int units;
private double bill;
public void accept() {
Scanner in = new Scanner(System.in);
System.out.print("Enter customer name: ");
n = in.nextLine();
System.out.print("Enter units consumed: ");
units = in.nextInt();
}
public void calculate() {
if (units <= 100)
bill = units * 2;
else if (units <= 300)
bill = 200 + (units - 100) * 3;
else {
double amt = 200 + 600 + (units - 300) * 5;
double surcharge = (amt * 2.5) / 100.0;
bill = amt + surcharge;
}
}
public void print() {
System.out.println("Name of the customer\t\t: " + n);
System.out.println("Number of units consumed\t: " + units);
System.out.println("Bill amount\t\t\t: " + bill);
}
public static void main(String args[]) {
ElectricBill obj = new ElectricBill();
obj.accept();
obj.calculate();
obj.print();
}
}