Question

Define a class Electric Bill with the following specifications:

class: ElectricBill
Instance Variable/ 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 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.

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Code

				
					import java.util.Scanner;

public class ElectricBill
{
	String n;
	int units;
	double bill;
        public ElectricBill()
        {
            n="";
            units=0;
            bill=0;
        
        }
	public void accept()
	{
		Scanner sc = new Scanner(System.in);
		System.out.print("Enter the name of customer: ");
		n = sc.next();
		System.out.print("Enter units: ");
		units = sc.nextInt();
	}
	public void calculate()
	{
		if (units<= 100)
		{
			bill = units * 2;
		}
		else if (units>100 && units<=300)
		{
			bill =100*2+ (units-100) * 3;
		}
		else 
		{
			bill = 100*2 + 200*3+(units-300) * 5;
			double charge = bill * 2.5 / 100;
			bill = bill + charge;
		}
	}
	public void print()
	{
		System.out.println("Name of the customer: " +n);
		System.out.println("Number of units consumed: " +units);
		System.out.println("Bill amount: " +bill);
	}
	public static void main(String[] args)
	{
		ElectricBill ob1 = new ElectricBill();
		ob1.accept();
		ob1.calculate();
		ob1.print();
	}
}