/** * @param itemCode Item Code of the Food Item which is to be bought * @param amount Amount entered for buying the Food Item * @return change * <p>This method calls the 'BuyItemWithCash' method in the VendingMachine class. */ public double BuyFoodItemWithCash(int itemCode, double amount) { double change; VendingMachine machine = parentUI.getVendingMachine(); change = machine.BuyItemWithCash(itemCode, amount); // Call to the method in Vending Machine Class return change; }