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Interview Questions and Answers for 'Ibm india' - 11 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


Recently asked in TCS , Tech Mahindra, HCL , Accenture and Fidelity.
  Q2. Explain Flow of Spring MVC ?Spring
Admin
info@buggybread.com
Ans. The DispatcherServlet configured in web.xml file receives the request.

The DispatcherServlet finds the appropriate Controller with the help of HandlerMapping and then invokes associated Controller.

Then the Controller executes the logic business logic and then returns ModeAndView object to the DispatcherServlet.

The DispatcherServlet determines the view from the ModelAndView object.

Then the DispatcherServlet passes the model object to the View.

The View is rendered and the Dispatcher Servlet sends the output to the Servlet container.

Finally Servlet Container sends the result back to the user.

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   Like         Discuss         Correct / Improve     j2ee   spring   mvc   frameworks   web applications   architecture     Asked in 10 Companies      Basic        frequent


Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews.
  Q3. Differences between abstract class and interface ?Core Java
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Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ).

A class can extend single abstract class whereas it can implement multiple interfaces.

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   Like         Discuss         Correct / Improve     java   classes   abstract class   interfaces     Asked in 65 Companies      basic        frequent


Very Frequently asked to fresh graduates and less experienced. Favorite question in Walk in drives. Frequently asked in Indian Services companies.
  Q4. Difference between Overloading and Overriding ?Core Java
Anonymous
Ans. Overloading - Similar Signature but different definition , like function overloading.

Overriding - Overriding the Definition of base class in the derived class.

  Sample Code for overloading

  Sample Code for overriding

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   Like         Discuss         Correct / Improve     java   oops   overloading   overriding   oops concepts   basic interview question     Asked in 82 Companies      basic        frequent

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  Q5. What are the different types of inner classes ?Core Java
Anonymous
Ans. Simple Inner Class,
Local Inner Class,
Anonymous Inner Class,
Static Nested Inner Class.

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   Like         Discuss         Correct / Improve     java   inner classes   classes     Asked in 6 Companies      basic        frequent

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 Q6. What is a static variable in Java ?Core Java2016-07-19 11:20:35

Ans. It is a class level variable that is shared among the objects of that class.

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   Like         Discuss         Correct / Improve     static   static variables   class level variables     Asked in 1 Companies      basic        frequent

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  Q7. What is database Normalization ?Database2017-01-09 12:00:02

Ans. https://en.wikipedia.org/wiki/Database_normalization

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   Like         Discuss         Correct / Improve     normalization  database     Asked in 35 Companies      intermediate        frequent


 Q8. Can we change return type of Overridden method ?Core Java2018-05-13 19:39:57

Ans. Yes, we can change return type of overridden method in child class but child's return type should be sub-type of parent's return type.

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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q9. Implement a queue, using only stacksData Structure2019-01-31 20:38:20

 This question was recently asked at 'IBM India'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     queue  stack     Asked in 1 Companies


 Q10. Difference between spring and spring boot2019-07-15 08:28:32

 This question was recently asked at 'IBM India'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q11. Difference between constructor and method ?2019-08-06 13:38:14

 This question was recently asked at 'Fog Creek,IBM India,Cubic,Zymergen,Parexel '.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 5 Companies




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