Program.java

package polimorfismo.application;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

import polimorfismo.entities.*;

public class Program {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		System.out.print("Enter the number of products: ");
		String name = null, manuDate = null;
		double price = 0.0, alfTax = 0.0;
		int n = sc.nextInt();

		Product com = new Product(name, price);
		UsedProduct used = new UsedProduct(name, price, manuDate);
		ImportedProduct imp = new ImportedProduct(name, price, alfTax);

		List<Product> prod = new ArrayList<>();

		for(int i = 1; i <= n; i++) {
			System.out.print("Product #" + i + " data:");
			System.out.println("Common, used or imported (c/u/i)? ");
			char answer = sc.next().charAt(0);
			sc.nextLine();
			System.out.print("Name: ");
			name = sc.nextLine();
			System.out.print("Price: ");
			price = sc.nextDouble();
			sc.nextLine();
			if (answer == 'c') {
				prod.add(com);
			}
			else if (answer == 'u') {
				System.out.print("Manufacture date (DD/MM/YY): ");
				manuDate = sc.nextLine();
				prod.add(used);

			}
			else if (answer == 'i') {
				System.out.print("Customs fee: ");
				alfTax = sc.nextDouble();
				prod.add(imp);
			} else {
				System.out.print("Your answer's invalid, please try again.");
			}
		}

		System.out.println("PRICE TAGS:");
		for (Product x : prod) {
			System.out.println(com);
			System.out.println(used);
			System.out.println(imp);
		}

		sc.close();
	}

}