Shop.java

import java.util.Scanner;

public class Shop {
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        Float total_price = new Float("0.00");
        String category = new String("");
        String code = new String("");
        Integer quantity = new Integer("0");
        Float price = new Float("0.00");

        System.out.print("Enter a category (F/M): ");

        category = input.nextLine();

        if (category.equals("M")) {
            System.out.println("Available codes:");
            System.out.println("M03: RM110.00");
            System.out.println("M04: RM99.90\n");
            
            System.out.print("Enter a code: ");
            code = input.nextLine();

            if (code.equals("M03")) {
                price = new Float("110.00");
            } else if (code.equals("M04")) {
                price = new Float("99.90");
            } else {
                System.out.println("Incorrect code");
                input.close();
                return;
            }


        } else if (category.equals("F")) {
            System.out.println("Available codes:");
            System.out.println("FM01: RM120.00");
            System.out.println("FM02: RM100.00\n");

            System.out.print("Enter a code: ");
            code = input.nextLine();

            if (code.equals("FM01")) {
                price = new Float("120.00");
            } else if (code.equals("FM02")) {
                price = new Float("100.00");
            } else {
                System.out.println("Incorrect code");
                input.close();
                return;
            }
        } else {
            System.out.println("You have entered an incorrect category.");
            input.close();
            return;
        }

        System.out.print("Enter a quantity: ");
        quantity = new Integer(input.nextLine());

        total_price = quantity * price;

        System.out.println("\n\n");

        System.out.println("Code: " + code);
        System.out.println("Price per unit: " + price);
        System.out.println("Quantity: " + quantity);
        System.out.println("Total price: " + total_price);

        input.close();
    }
}