The code for the ProductApp class

import java.util.Scanner;

public class ProductApp
{
    public static void main(String args[])
    {
        // display a welcome message
        System.out.println(
            "Welcome to the Product Selector");
        System.out.println();

        // perform 1 or more selections
        Scanner sc = new Scanner(System.in);
        String choice = "y";
        while (choice.equalsIgnoreCase("y"))
        {
            System.out.print("Enter product code: ");
            String productCode = sc.next();
               // read the product code
            sc.nextLine();
               // discard any other data entered on the line
            // get the Product object
            Product p = ProductDB.getProduct(productCode);

            // display the output
            System.out.println();
            if (p != null)
                System.out.println(p);
            else
                System.out.println(
                "No product matches this product code.\n");

            System.out.println(
            "Product count: " + Product.getCount() + "\n");

            // see if the user wants to continue
            System.out.print("Continue? (y/n): ");
            choice = sc.nextLine();
            System.out.println();
        }
    }
}