Which one of the following is know as the key to object-oriented programming ?
A. Polymorphism
B. Encapsulation
C. Data Abstraction
D. Orthogonality
Answer:A
Which one of the following is know as the key to object-oriented programming ?
A. Polymorphism B. Encapsulation C. Data Abstraction D. Orthogonality
Explanation: Encapsulation simply means the hiding of data and functionality from a client.