DISCOUNT CALCULATOR (OOP)

 import java.util.Scanner;

public class MedDiscount {
  //  METHOD WITH VARARGS TO GET THE TOTAL AMOUNT
    public double calculate_Total(double...amounts){
       double totalAmount = 0;
       for(double med : amounts){
           totalAmount += med;
       }
        return totalAmount;
    }

    //METHOD TO CALCULATE THE DISCOUNT_RATE
    public double Discount_Rate(double totalAmount){
        double rate = 0.0;

         if(totalAmount > 5000 && totalAmount <= 15000){
            rate = 0.5;
        }
        else if(totalAmount > 15000 && totalAmount <= 20000){
            rate = 1.0;
        }
        else if(totalAmount > 20000){
            rate = 1.5;
        }
        return totalAmount * rate;
    }

    // METHOD TO CATEGORISE A CUSTOMER BASED ON AMOUNT.
    public String Category(double totalAmount){
        String category = null;
         if(totalAmount > 5000 && totalAmount <= 15000){
            category = "AVERAGE PURCHASE AMOUNT - 5% Discount";
        }
        else if(totalAmount > 15000 && totalAmount <= 20000){
            category = "HIGH PURCHASE AMOUNT - 10% Discount";
        }
        else if(totalAmount > 20000){
            category = "HIGH PURCHASE AMOUNT - 15% Discount";
        }
        else {
            category = "NO DISCOUNT";
         }
        return category;
    }
}
// ACTUAL CLASS AND MAIN METHOD FOR EXECUTION
class App{
    public static void main(String[] args) {
        MedDiscount haz = new MedDiscount();

        Scanner Hafiz = new Scanner(System.in);

        System.out.print("ENTER NUMBER OF ITEMS PURCHASED: ");
        int Num_of_Items = Hafiz.nextInt();

        double[] Num_of_Items_bought = new double[Num_of_Items];
        for (int i = 0; i < Num_of_Items; i++) {
            System.out.print("Enter price of item " + (i + 1) + ": Le ");
            Num_of_Items_bought[i] = Hafiz.nextDouble();
        }

        // CALCULATE USING VARARGS METHOD
        double totalAmount = haz.calculate_Total(Num_of_Items_bought);

        double discount = haz.Discount_Rate(totalAmount);
        double finalPrice = totalAmount - discount;
        String category = haz.Category(totalAmount);

        System.out.println("\nPurchase category: " + category);
        System.out.println("Total Amount: Le " + totalAmount);
        System.out.println("Discount Amount: Le " + discount);
        System.out.println("Final Price after discount: Le " + finalPrice);
    }
}

MOHAMED ALPHA KAMARA (HAFIZ)

I - 24 - 64179

B.SC. (HONS) INFORMATION TECHNOLOGY