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Interview Questions and Answers for 'Bureau Veritas' - 4 question(s) found - Order By Newest

  Q1. What is a String Pool ?Core Java
Anonymous
Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference.

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   Like         Discuss         Correct / Improve     java   oops   string   string class   string pool   heap memory     Asked in 30 Companies      intermediate        frequent

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Very frequently asked.Usually among first few questions.
  Q2. What is MVC ? Design
Anonymous
Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application

1. Controller receives the requests and handles overall control of the request
2. Model holds majority of the Business logic, and
3. View comprise of the view objects and GUI component

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   Like         Discuss         Correct / Improve     j2ee   mvc   mvc design pattern   design pattern   struts   spring   web application   web frameworks   ebay     Asked in 60 Companies      basic        frequent

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Very frequently asked. Usually asked with questions related to String.
  Q3. What is an Immutable Object ?Core Java
Anonymous
Ans. Object that can't be changed after instantiation.

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   Like         Discuss         Correct / Improve     java   oops   immutable  immutability     Asked in 27 Companies      basic        frequent

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 Q4. How is Abstraction implemented in Java ?Core Java
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Ans. Abstraction is provided in Java by following ways -

Coding to the ( Interfaces / Abstract Classes ) or contracts

By Encapsulating details within classes and exposing the minimal Door ( few public methods )

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   Like         Discuss         Correct / Improve     java   oops concepts   abstraction   interfaces   abstract class   encapsulation  object oriented programming (oops)  oops concepts     Asked in 3 Companies      basic        frequent




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