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

Q1. Explain OOPs

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Explain OOPs Principles

or

Explain OOPs Concepts

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Explain OOPs features

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Tell me something about OOPs

^{2017-06-13 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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Q2. Difference between Vector and ArrayList ?

^Anonymous

Ans. Vectors are synchronized whereas Array lists are not.

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