package collections.hashset;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
public class Cart {
private static Set products = new HashSet();
public static void main(String[] args) {
Cart cart = new Cart();
Product product;
product = new Product(1234, "Pasta", "Ziti, 16oz box", 3, 1.45);
cart.addProduct(product);
product = new Product(1234, "Pasta", "Ziti, 16oz box", 1, 1.45);
cart.addProduct(product);
cart.removeProduct(product);
cart.addProduct(product);
Iterator iter = products.iterator();
while (iter.hasNext()) {
System.out.println((Product) iter.next());
}
}
public void addProduct(Product product) {
if (products.add(product))
System.out.println("New product added.\n");
else
System.out.println("Product already exists!\n");
}
public void removeProduct(Product product) {
if (products.remove(product))
System.out.println("Product removed.\n");
else
System.out.println("Product not found!\n");
}
}