FoodOrdering

The project is about Food Ordering system and in this food ordering system we created a combo of dosa and pizza. The main idea behind this project is User order for the pizza and our system will offer the user with free kind of dosa. As the pizza is being ordered we have made a way for the user to add some customization to the existing pizza. And after making the combo we are keeping the watch on the various states of the system. In this project we have used the three design patterns which are the abstract factory design pattern, decorator design and the state design pattern .Our main class which is foodordering.java consists of the menu driven program in which the basic integration of all the three design patterns is handled . The abstract factory design pattern is used for creating the pizzas and dosa. The classes which are implementing the Pizza Interface are CheesePizza, VeggiePizza, MargheritaPizza and Pepperoni Pizza which are representing the concrete products of the pizza. The Dosa Interface is another interface for another kind of products. The classes implementing the order interface are PlainDosa, RavaDosa, MasalaDosa, MoongDalDosa which are also a representation of the concrete products of the Dosa. The orders interface is used for combining the classes of pizza and dosa . Order1 class is used as a context for state design pattern ,for maintaining the ordered food state an interface called order state is being created and the classes implementing the order state interface which represents various states. The default state is been set to JustOrdered state. Order1 is used for combining CheesePizza and PlainDosa. When the user exits the ordering, the state is being changed to the Dispatched State. Order2, Order3, Order4 classes are used for making various combos of the pizza and the dosa which are Veggie Pizza With Masala Dosa, Pepperoni Pizza With Moong Dal dosa and Margherita Pizza With Rava Dosa respectively. For customizing the pizza, we have made an abstract class named as Customize Pizza which is extending the pizza class. This class illustrates the use of the Decorator design pattern which hold the reference of the Pizza class. A class PaneerTopings which is extending the CustomizePizza class is used for dynamically adding toppings on the pizza. This class PaneerTopings is illustrating the addition of the responsibilities dynamically to the already existing object which in our case is pizza. Regarding our main program(FoodOrdering class), we have made it as a menu driven program to interact to the system. We have presented various choices of the combo’s to the user so that the user can select one of them. After selecting the combo, the user will be prompted to add toppings to the pizza. If user enter yes, then the system will add the Panner toppings to the Pizza. Then the user will be prompted by the message whether to continue or not. If user want to continue, then system is directed to show all the options once again and if user want to close the ordering the program will exit. This is the entire flow of our Project.