Object Oriented Programming

6. Why are member variables usually declared Private in classes?

7. At the end of the following example, how many Student objects exist? Dim st1 As New Student Dim st2 As Student st2 = st1

8. At the end of the following example, how many Student objects exist? Dim st1 As New Student Dim st2 As Student st2 = st1 st1 = Nothing

9. Suppose that an application at an animal hospital uses two classes: Mammaland Dog. Which do you think is the base class and which is the derived class? Why?

10. Why does it make sense that you cannot use the Overridable keyword in a private base class member declaration?