Which of the following statements about polymorphism is false?
A) With polymorphism, you can direct a variety of objects to behave in manners appropriate to those objects without even knowing their types.
B) With polymorphism, new types of objects that can respond to existing messages can easily be incorporated into a system without modifying the base system.
C) Polymorphism enables you to deal in specifics and let the execution-time environment concern itself with the generalities.
D) To get polymorphic behavior among existing objects, those objects must be instantiated from classes in the same inheritance hierarchy.

Question

Quizplus · Accepted Answer

Polymorphism allows you to treat objects of different classes in the same way by interfacing with them through a common base class or interface. This means you can deal in generalities (through the common interface) while the execution-time environment handles the specifics (which specific class's method is called). Statement C incorrectly suggests the opposite.

Which of the Following Statements About Polymorphism Is False