Coffee Shop Decorator Design Pattern and MVC

You are asked to design and develop a calculator for a coffee shop, which computes the total cost of customer's order. Customers can make an order for a variety of combinations of coffee, black tea, and green tea, and condiments. Therefore, your program needs to be able to dynamically change the beverage type. Cost of a cup depends on the combination that was ordered.

Here are the costs for each beverage type and condiments.

  • Coffee: $12
  • Black Tea: $8
  • Green Tea: $10
  • Milk: +$3
  • Chocolate: +$4
  • Ice: +$1
  • Honey: +$2

Please apply MVC and decorator design pattern in your solution. Here are a couple of samples runs for the application: see image.

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