public class ElectricityBill {
    public static double calculateBill(int units) {
        double bill = 0;
        
        if(units <= 100) {
            bill = units * 1.20;
        } else if(units <= 300) {
            bill = 100 * 1.20 + (units - 100) * 2.00;
        } else {
            bill = 100 * 1.20 + 200 * 2.00 + (units - 300) * 3.00;
        }
        
        return bill;
    }
    
    public static void main(String[] args) {
        int units = 250;
        double totalBill = calculateBill(units);
        System.out.println("Electricity Bill for " + units + " units: $" + totalBill);
    }
}
    

1. What is Electricity Bill Calculation?

Electricity bill calculation involves determining the cost of consumed electrical energy based on predefined tariff rates. This Java-based calculator implements a tiered pricing system where different rates apply to different consumption levels.

2. How Does the Java Calculator Work?

The calculator uses a tiered pricing structure:

Tier 1 (0-100 units): $1.20 per unit
Tier 2 (101-300 units): $2.00 per unit
Tier 3 (301+ units): $3.00 per unit
                    

The Java code implements this logic using conditional statements to calculate the total bill based on the consumed units.

3. Importance of Bill Calculation

Details: Accurate electricity bill calculation helps consumers understand their energy consumption patterns, budget effectively, and identify opportunities for energy conservation.

4. Using the Calculator

Tips: Enter the total electricity units consumed. The calculator will automatically compute the bill using the tiered pricing structure. Units must be a non-negative integer value.

5. Frequently Asked Questions (FAQ)

Q1: How are the tariff rates determined?
A: Tariff rates are typically set by electricity providers and may vary by region, consumption patterns, and customer category.

Q2: Can I modify the tariff rates in the code?
A: Yes, the Java code can be easily modified to implement different tariff structures by changing the rate values and tier thresholds.

Q3: What is a tiered pricing system?
A: Tiered pricing charges different rates for different consumption levels, encouraging energy conservation by making higher consumption more expensive.

Q4: How accurate is this calculation?
A: This provides a basic calculation. Actual bills may include additional charges like taxes, fixed charges, and other fees that vary by provider.

Q5: Can this code be integrated into larger applications?
A: Yes, the calculateBill method can be easily integrated into larger Java applications for utility billing systems.