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Java Program to Calculate Electricity Bill

by suresh

Write a Java Program to Calculate Electricity Bill using Else If statement with examples.

Java Program to Calculate Electricity Bill using Else If

This Java program asks the user to enter the units consumed. Next, it calculates 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: The Java Else If statement checks the first condition if it is TRUE, it executes the statements inside that block. If the condition is FALSE, it checks 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);
	}

}
Java Program to Calculate Electricity Bill 1

Java Program to find Electricity Bill using Method

This Java program to calculate electricity bill is the same as the first example. But we separated the logic and placed it in a 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;
	}
}
Java Program to Calculate Electricity Bill 2

Let me try a different value

Java Program to Calculate Electricity Bill 3

Java Program to find Electricity Bill Example

This type of Java program is useful if the board has uniform rates. Something like: if you consume between 300 and 500 units, then charges are 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);
	}
}
Java Program to Calculate Electricity Bill 4

Let me try a different value

Java Program to Calculate Electricity Bill 5

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