Parameters are used to pass values from a caller into a method.
So far all the examples have used primitive data types
as parameters.
This chapter examines parameters that are object references.
Chapter Topics:
Review of parameters.
Call by value with primitive data types.
Objects as parameters.
Immutable objects as parameters.
Changable objects as parameters.
QUESTION 1:
(Review:) What is a formal parameter? What is an actual parameter?