Build a class called Calculator that emulates basic functions of a calculator: add, subtract, multiply, divide, and clear. The class has one private member field, double value, for the calculator's current value. Implement the following Constructor and instance methods as listed below:

public Calculator$()-$ Constructor method to set the member field to $0\mathrm{.}0$

public void add$($double val$)-$ add the parameter to the member field

public void subtract$($double val$)-$ subtract the parameter from the member field

public void multiply$($double val$)-$ multiply the member field by the parameter

public void divide$($double val$)-$ divide the member field by the parameter

public void clear$()-$ set the member field to $0\mathrm{.}0$

public double getValue$()-$ return the member field

Given two double input values num$1$ and num$2,$ the program outputs the following values:

The initial value of the instance field, value

The value after adding num$1$

The value after multiplying by $3$

The value after subtracting num $2$

The value after dividing by $2$