Monday, 3 August 2015

Java Interview Question Answer

http://www.withoutbook.com/Technology.php?tech=1&page=7&subject=Interview%20Questions%20and%20Answers

Ques 31. What is the advantage of OOP?
Ans. You will get varying answers to this question depending on whom you ask. Major advantages of OOP are: 
1. Simplicity: software objects model real world objects, so the complexity is reduced and the program structure is very clear; 
2. Modularity: each object forms a separate entity whose internal workings are decoupled from other parts of the system; 
3. Modifiability: it is easy to make minor changes in the data representation or the procedures in an OO program. Changes inside a class do not affect any other part of a program, since the only public interface that the external world has to a class is through the use of methods; 
4. Extensibility: adding new features or responding to changing operating environments can be solved by introducing a few new objects and modifying some existing ones; 
5. Maintainability: objects can be maintained separately, making locating and fixing problems easier; 
6. Re-usability: objects can be reused in different programs
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