What is encapsulation?

Answers were Sorted based on User's Feedback



What is encapsulation?..

Answer / abalonesoft

Preventing unauthorized access to some piece of information
or functionality.

The key money-saving insight is to separate the volatile
part of some chunk of software from the stable part.
Encapsulation puts a firewall around the chunk, which
prevents other chunks from accessing the volatile parts;
other chunks can only access the stable parts. This prevents
the other chunks from breaking if (when!) the volatile parts
are changed. In context of OO software, a "chunk" is
normally a class or a tight group of classes.

The "volatile parts" are the implementation details. If the
chunk is a single class, the volatile part is normally
encapsulated using the private and/or protected keywords. If
the chunk is a tight group of classes, encapsulation can be
used to deny access to entire classes in that group.
Inheritance can also be used as a form of encapsulation.

The "stable parts" are the interfaces. A good interface
provides a simplified view in the vocabulary of a user, and
is designed from the outside-in (here a "user" means another
developer, not the end-user who buys the completed
application). If the chunk is a single class, the interface
is simply the class's public member functions and friend
functions. If the chunk is a tight group of classes, the
interface can include several of the classes in the chunk.

Designing a clean interface and separating that interface
from its implementation merely allows users to use the
interface. But encapsulating (putting "in a capsule") the
implementation forces users to use the interface.

Is This Answer Correct ?    2 Yes 0 No

What is encapsulation?..

Answer / srinidhi

integrate a related data to form a single unit this is
encapsulation this is possible by using structures

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More C Interview Questions

write a own function to compare two strings with out using stringcomparition function?

6 Answers   LG Soft, Sasken,


main() { int a=0; if(a=0) printf("Ramco Systems\n"); printf("India\n"); } output?

7 Answers   Ramco,


what is output? main() { #define SQR(x) x++ * ++x int i = 3; printf(" %d %d ",SQR(i),i * SQR(i)); } a)9 27 b)35 60 c)20 60 d)15 175

5 Answers   Wipro,


What are c preprocessors?

1 Answers  


Differentiate abs() function from fabs() function.

1 Answers  


What are the back slash character constants or escape sequence charactersavailable in c?

1 Answers  


When is the “void” keyword used in a function?

2 Answers  


Stimulate calculators to perform addition,subtraction,multiplication and division on two numbers using if/else statement?

1 Answers   IBM,


What is the use of c language in real life?

1 Answers  


What is the output for the following program #include<stdio.h> main() { char a[5][5],flag; a[0][0]='A'; flag=((a==*a)&&(*a==a[0])); printf("%d\n",flag); }

5 Answers   ADITI, Wipro,


What is the advantage of a random access file?

1 Answers  


What is the difference between formatted&unformatted i/o functions?

1 Answers  


Categories