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Core java - Interview Questions and Answers for 'Harman' - 2 question(s) found - Order By Newest

  Q1. Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

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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 protected
4. Polymorphism for flexibility and interfacing

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Related Questions
 Can you give a real world example of Encapsulation and Abstraction ?
 Which of the following Java feature promotes access protection or Hiding ?

a. Inheritance
b. Encapsulation
c. Abstraction
d. Composition
 Define encapsulation in Java ?
 Give an example of how Object Oriented Programming Concepts can be implemented.
 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 ?

  Q2. Difference between Vector and ArrayList ?Core Java
Anonymous
Ans. Vectors are synchronized whereas Array lists are not.

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Related Questions
 If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ?
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a. Set
b. List
c. Map
d. Any Collection implementation
  What is the difference between List, Set and Map ?

or

What are the different Java Collections Interfaces ?
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