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This application must follow the MVC pattern used for all previous labs

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This application must follow the MVC pattern used for all previous labs (App class, Controller, View, Service Layer, DAO) – this includes the use of constructor-based dependency injection. You must have a full set of unit tests for your DAO and Service Layer components.

You must use BigDecimal for all monetary calculations where applicable. You must include at least one lambda function in the solution.

You must use application-specific exceptions and your application must fail gracefully under all conditions (i.e. no displaying a stack trace when an exception is thrown). At a minimum you should have the following application-specific exceptions thrown by your Service Layer:

One that is thrown when the user tries to purchase an item but doesn't deposit enough money (i.e. InsufficientFundsException)

One that is thrown when the user tries to purchase an item that has zero inventory (i.e. NoItemInventoryException) Use enums to represent the values of different coins. Include an Audit DAO to log events and the time they occurred.

 

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