Sample computer merchandise program for blue

import java.util.*;

public class ComputerMerchandise {
           
            public static void main(String[] args) {
                        java.util.Hashtable<Integer, Product> htProducts = new java.util.Hashtable<Integer, Product>();
                        for(Product product:Products.GetAllAvailableProduct())
                        {
                                    htProducts.put(product.getProductId(),product);
                                    System.out.println(product.toString());
                        }
                        Hashtable<Integer,Integer> orders = new Hashtable<Integer,Integer>();
                        java.util.Scanner scanner = new Scanner(System.in);
                        while(true)
                        {
                                    System.out.print("To Order new item. Press Y to leave press any other key..");
                                    String input = scanner.next();
                                    if(!input.equalsIgnoreCase("Y")) break;
                                    System.out.print("Enter the product id:");
                                    int productId = scanner.nextInt();
                                    Product selectedProduct = htProducts.get(new Integer(productId));
                                    if(selectedProduct==null)
                                                System.out.println("InValid Product.");
                                    else
                                    {
                                                System.out.print("Enter nos:");
                                                int quantity = scanner.nextInt();
                                 Integer intOrdered = orders.get(new Integer(productId));
                                                int alreadyOrdered = intOrdered==null?0:intOrdered.intValue();
                                                if(alreadyOrdered<=0)
                                                {
                                                            orders.put(new Integer(productId), new Integer(quantity));
                                                }else
                                                {
                                                            orders.put(new Integer(productId), new Integer(quantity+alreadyOrdered));
                                                }
                                    }
                        }
                        if(!orders.isEmpty())
                        {
                                    double total = 0.0d;                             
                                    Enumeration<Integer> enu = orders.keys();
                                    while(enu.hasMoreElements())
                                    {
                                                Integer key = enu.nextElement();
                                                int nos = orders.get(key).intValue();
                                                Product soldProduct = htProducts.get(key);
                                                double price = soldProduct.getCost()*nos;
                                                total+=price;
                                                String display = "Product Id:"+soldProduct.getProductId()+",Item:"+soldProduct.getName()+",Quantity:"+nos+",Cost="+price;
                                                System.out.println(display);
                                    }
                                    if(total>0)
                                                System.out.println("Total="+total);
                        }
            }
}

class Products
{
            /*
             * Returns a collection of avilable products
             * */
            static Product[] GetAllAvailableProduct()
            {
                        Product[] products = {
                                                new Product("iBallMouse",600,1234),
                                                new Product("Samsung CRT Monitor",5000,3457),
                                                new Product("LG Keyboard",1500,200)
                        };
                        return products;
            }
}

class Product
{
            private double cost;
            private String name;
            private Integer productId;

            public Integer getProductId() {
                        return productId;
            }

            public void setProductId(Integer productId) {
                        this.productId = productId;
            }

            Product(String name,double cost,int productId)
            {
                        this.name = name;
                        this.cost = cost;
                        this.productId = new Integer(productId);
            }

            public String getName() {
                        return name;
            }

            public void setName(String name) {
                        this.name = name;
            }

            public double getCost() {
                        return cost;
            }

            public void setCost(double cost) {
                        this.cost = cost;
            }

            public String toString()
            {
                        return String.format("ProductId:%d,ProductName:%s,Price:%s", this.productId,this.name,this.cost);
            }
}