Java Program to Calculate Electricity Bill

In this article, we will show you, How to write a Java Program to Calculate Electricity Bill using Else If statement with examples.

Java Program to Calculate Electricity Bill using Else If

This program will ask the user to enter the units consumed. Next, it will calculate the Total Electricity bill. This approach is useful if the Electricity board is charging different tariffs for different units. For this example we are using Else If Statement.

TIP: Else If statement will check the first condition, if it is TRUE, it will execute the statements inside that block. If the condition is FALSE, it will check the Next one (Else If condition) and so on.

// Java Program to Calculate Electricity Bill
import java.util.Scanner;

public class ElectricityBill1 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int Units;
		double Amount, Sur_Charge, Total_Amount;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Units that you Consumed  : ");
		Units = sc.nextInt();
  
	  	if (Units < 50)
	  	{
	        Amount = Units * 2.60;
	  		Sur_Charge = 25;  	
	  	} 
	  	else if (Units <= 100)
	  	{
	  		// For the First Fifty Units Charge = 130 (50 * 2.60)
	  		// Next, we are removing those 50 units from total units
	  		Amount = 130 + ((Units - 50 ) * 3.25);
	  		Sur_Charge = 35; 	
	  	}
	  	else if (Units <= 200)
	  	{
	  		// First Fifty Units charge = 130, and 50 - 100 is 162.50 (50 * 3.25)
	  		// Next, we are removing those 100 units from total units
	  		Amount = 130 + 162.50 + ((Units - 100 ) * 5.26);
	  		Sur_Charge = 45; 	
	  	}
	  	else
	  	{
	  		/* First Fifty Units = 130, 50 - 100 is 162.50, 
	  		 and 100 - 200 is 526 (100 * 5.65)
	  		Next, we are removing those 200 units from total units */
		   	Amount = 130 + 162.50 + 526 + ((Units - 200 ) * 7.75); 
		   	Sur_Charge = 55; 
		}
		
		Total_Amount = Amount + Sur_Charge;
		System.out.println("\n Electricity Bill  =  " + Total_Amount);
	}

}

OUTPUT

Java Program to Calculate Electricity Bill using Method

This program is same as first example but we separated the logic and placed it in the separate method.

// Java Program to Calculate Electricity Bill
import java.util.Scanner;

public class ElectricityBill2 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int Units;	
		double Total_Amount;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Units that you Consumed  : ");
		Units = sc.nextInt();
  
		Total_Amount = Electricity(Units);
		System.out.println("\n Electricity Bill  =  " + Total_Amount);
	}
	public static double Electricity(int Units)
	{
		double Amount, Sur_Charge, Total_Amount;
		if (Units < 50)
	  	{
	        Amount = Units * 2.60;
	  		Sur_Charge = 25;  	
	  	} 
	  	else if (Units <= 100)
	  	{
	  		Amount = 130 + ((Units - 50 ) * 3.25);
	  		Sur_Charge = 35; 	
	  	}
	  	else if (Units <= 200)
	  	{
	  		Amount = 130 + 162.50 + ((Units - 100 ) * 5.26);
	  		Sur_Charge = 45; 	
	  	}
	  	else
	  	{
		   	Amount = 130 + 162.50 + 526 + ((Units - 200 ) * 7.75); 
		   	Sur_Charge = 55; 
		}
		
		Total_Amount = Amount + Sur_Charge;
		return Total_Amount;
	}
}

OUTPUT

Let me try different value

Java Program to Calculate Electricity Bill Example

This type of program is useful if the board has uniform rates. Something like: if you consume between 300 and 500 units then changes will be fixed as 7.75 Rupees for Unit etc.

// Java Program to Calculate Electricity Bill
import java.util.Scanner;

public class ElectricityBill3 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int Units;
		double Amount, Sur_Charge, Total_Amount;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Units that you Consumed  : ");
		Units = sc.nextInt();
		
		if (Units > 500)
	  	{
	  		Amount = Units * 9.65;
	  		Sur_Charge = 85;  	
	  	} // Otherwise (fails), Compiler will move to Next Else If block 
	  	else if (Units >= 300)
	  	{
	  		Amount = Units * 7.75;
	  		Sur_Charge = 75; 	
	  	} 
	  	else if (Units >= 200)
	  	{
	  		Amount = Units * 5.26;
	  		Sur_Charge = 55; 	
	  	}  
	  	else if (Units >= 100)
	  	{
	  		Amount = Units * 3.76;
	  		Sur_Charge = 35; 	
	  	} // Otherwise (fails), Compiler will move to Else block   	
	  	else
	  	{
		   	Amount = Units * 2.25; 
		   	Sur_Charge = 25; 
		}
		Total_Amount = Amount + Sur_Charge;
		System.out.println("\n Electricity Bill  =  " + Total_Amount);
	}
}

OUTPUT

Let me try different value

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