public static void enterItemQuantity() {
		try {
			itemQuantity = keyboard.nextInt();
			if(itemQuantity < itemQuantityMin || itemQuantity > itemQuantityMax)
				throw new ArrayIndexOutOfBoundsException();
		} catch (Exception e) {
			System.out.println("INVALID: Invalid item quantity, valid quantities are between " + itemQuantityMin + " and " + itemQuantityMax);
			keyboard.nextLine();
			enterItemQuantity();
		}
	}