Package calculator

package calculator

Class	Description
ArithmeticOperation	Created for designing custom lambda function for different Arithmetic Operation.
CalculatorApplication	This class is the driver program for the application.
CalculatorController	This class represents the controller in the MVC architecture for a calculator application.
CalculatorModel	This class represents the model in the MVC architecture for a calculator application.
CalculatorView	This class represents the model in the MVC architecture.
InvaildOperatorException	Created for handling the unexpected operationName value.
Keypad	This Interface will design the keypad for the calculator.