private static void quantityOfProducts() {
		mapOfQuantityProducts = new HashMap<String, Integer>();
		for (String entry : scanProducts) {
			if (mapOfQuantityProducts.containsKey(entry)) {
				mapOfQuantityProducts.put(entry, (mapOfQuantityProducts.get(entry) + 1));
			} else {
				mapOfQuantityProducts.put(entry, 1);
			}
		}
	}