public void addToProductQuantity(int product, int amount, Session session) { if (product < 0) { throw new ArgumentException("illegal product number"); } if (amount <= 0) { throw new IllegalAmountException("error - amount must be a positive number"); } db.addToProductQuantity(product, amount, session); }
public void addToProductQuantity(int product, int amount, int session) { if (product < 0) { throw new ILLArgumentException("illegal product number"); } if (amount <= 0) { throw new AlreadyExistException("Error: Quantity must be a positive number"); } db.addToProductQuantity(product, amount, session); }