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Interview Questions and Answers for 'Axtria' - 3 question(s) found - Order By Newest

  Q1. Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs
Core Java2017-06-13 08:25:45

Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features

1. Inheritance for Code Reuse
2. Abstraction for modularity, maintenance and agility
3. Encapsulation for security and protection
4. Polymorphism for flexibility and interfacing

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   Like         Discuss         Correct / Improve     oops  oops features     Asked in 236 Companies      basic        frequent


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 Can you give a real world example of Encapsulation and Abstraction ?
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a. Inheritance
b. Encapsulation
c. Abstraction
d. Composition
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 Which of the OOP's features facilitate dependency injection ?
 Which of the OOP's feature - encapsulation or abstraction - is more important ?
 Which of the polymorphism type - static or runtime - is more important ?
 Which of the OOP's feature is most important ?


Frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q2. What are the methods of Object Class ?Core Java
Anonymous
Ans. clone() - Creates and returns a copy of this object.

equals() - Indicates whether some other object is "equal to" this one.

finalize() - Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

getClass() - Returns the runtime class of an object.

hashCode() - Returns a hash code value for the object.

toString() - Returns a string representation of the object.

notify(), notifyAll(), and wait() - Play a part in synchronizing the activities of independently running threads in a program.

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Related Questions

  Difference between == and .equals() ?
  Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?
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Frequently asked question for intermediate developers.
  Q3. What is Volatile keyword used for ?Core Java
Anonymous
Ans. Volatile is a declaration that a variable can be accessed by multiple threads and hence shouldnt be cached.

  Sample Code for volatile

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Related Questions

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