Question: Automated Restaurant System (Command Design Pattern) PROBLEM You are to implement an automated restaurant system utilizing the Command design pattern, minimally consisting of the following

Automated Restaurant System (Command Design Pattern)

PROBLEM You are to implement an automated restaurant system utilizing the Command design pattern, minimally consisting of the following three commands. You will then extend this basic system in any way that you choose to demonstrate the use of additional design patterns.

Display menu

Submit Order

Display tab

SCENARIO (of the basic system) In the basic system, we assume that all orders are from the same table (i.e., there is only one table in the restaurant). Therefore, a tab is generated by simply totaling all of the ordered items, and tabs are not stored.

The menu of the basic system will consist of just main entrees. It will not include appetizers, desserts, drinks, etc. The information for each entre will just be the name of the dish ("Roast Beef", "Chicken Korma", "Jiaozi", etc.) and the price.

APPROACH You should implement the Command design pattern. This includes the following:

Text-based user interface

SystemInterface class

Invoker class

Command interface

Command classes (one for each command)

Aggregator class

Menu class

MenuItem Class

Orders class

OrderItem Class

Tab class

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