public static void setQuantity(WorldPopulation product, int quantity) {
// Get the current cart entry
ShoppingCartEntry curEntry = cartMap.get(product);
// If the quantity is zero or less, remove the products
if (quantity <= 0) {
if (curEntry != null) removeProduct(product);
return;
}
// If a current cart entry doesn't exist, create one
if (curEntry == null) {
curEntry = new ShoppingCartEntry(product, quantity);
cartMap.put(product, curEntry);
return;
}
// Update the quantity
curEntry.setQuantity(quantity);
}
public static int getProductQuantity(WorldPopulation product) {
// Get the current cart entry
ShoppingCartEntry curEntry = cartMap.get(product);
if (curEntry != null) return curEntry.getQuantity();
return 0;
}
