Receipt.java

package org.codedifferently;

import java.util.Random;

public class Receipt {
    double item1;
    double item2;
    double item3;
    double subtotal;
    double discountedTotal;
    double taxAmount;
    double finalTotal;

    private final double TAX_RATE = 0.08; // 8% tax

    // Generate 3 separate random item prices
    public void generateItemPrices() {
        Random random = new Random();
        item1 = 10 + (90 * random.nextDouble());
        item2 = 10 + (90 * random.nextDouble());
        item3 = 10 + (90 * random.nextDouble());
    }

    // Calculate subtotal
    public void calculateSubtotal() {
        subtotal = item1 + item2 + item3;
    }

    // Apply coupon
    public void applyCoupon(String couponCode) {
        if (couponCode.equalsIgnoreCase("SAVE50")) {
            discountedTotal = subtotal * 0.5;
        } else {
            discountedTotal = subtotal;
        }
    }

    // Calculate tax
    public void calculateTax() {
        taxAmount = discountedTotal * TAX_RATE;
    }

    // Calculate final total
    public void calculateFinalTotal() {
        finalTotal = discountedTotal + taxAmount;
    }

    // Print receipt details in a simple way
    public void printReceiptDetails() {
        System.out.println("Item 1 Price: $" + item1);
        System.out.println("Item 2 Price: $" + item2);
        System.out.println("Item 3 Price: $" + item3);
        System.out.println("Subtotal: $" + subtotal);
        System.out.println("Discounted Total: $" + discountedTotal);
        System.out.println("Tax: $" + taxAmount);
        System.out.println("Final Total: $" + finalTotal);
    }

}