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Interview Questions and Answers for 'Inject' - 11 question(s) found - Order By Newest

Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc )
  Q1. What is Dependency Injection or IOC ( Inversion of Control ) ?Design

Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.

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 Q2. Name few Dependency Injection frameworks ?
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Ans. Google Guice , Spring , PicoContainer and Dagger.

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   Like      Discuss      Correct / Improve     dependency injection   di   frameworks   ioc


Frequently asked in Phone Interviews.
 Q3. What are the various Auto Wiring types in Spring ?
Admin
info@buggybread.com
Ans. By Name , By Type and Constructor.

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   Like      Discuss      Correct / Improve     java   spring   spring container   dependency injection   auto wiring   auto wiring types   general electric   ge


 Q4. What is the difference betweeen @Inject and @Autowired ?Spring
Admin
info@buggybread.com
Ans. @Autowired and @Inject are similar in terms of functionality they achieve. @Inject is part of a new Java technology called CDI that defines a standard for dependency injection whereas @Autowired is a Spring specific annotation for dependency injection.

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   Like      Discuss      Correct / Improve     spring   web frameworks   dependency injection   autowired   inject   spring annotations   ioc


 Q5. Which of the following Java features facilitates Dependency Injection - Inheritance or Composition ? 2016-05-26 14:21:24

Ans. Composition for sure. Inheritance in case the reference of a parent class is used. If its interface, no Inheritance involved.

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   Like      Discuss      Correct / Improve     dependency injection  IOC


 Q6. What are the different ways in which dependency injection can be done using Spring Framework ?Spring2017-06-23 11:48:58

Ans. Using Constructor and Setters.

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   Like      Discuss      Correct / Improve     spring  dependency injection   inversion of control


 Q7. Difference between constructor and setter injection ?Spring2017-06-23 11:49:27

 This question was recently asked at 'Sofi,HCL Technologies,Tata Consulancy (TCS)'.This question is still unanswered. Can you please provide an answer.


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   Like      Discuss      Correct / Improve     spring  dependency injection   inversion of control     Sofi  HCL Technologies  Tata Consulancy (TCS)


 Q8. What are the benefits of Dependency Injection or IOC ?Design2017-06-23 11:51:20

 This question is still unanswered. Can you please provide an answer.


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   Like      Discuss      Correct / Improve     dependency injection  IOC  inversion of control


 Q9. Which of the OOP's features facilitate dependency injection ? Design2017-08-06 19:11:22

Ans. Inheritance , Runtime Polymorphism and Composition.

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   Like      Discuss      Correct / Improve     dependency injection  inversion of control  ioc  oops  oops features



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 Q10. Is dependency injection possible if we don't have inheritance / Composition ?Design2017-08-06 19:13:37

Ans. Without composition - No, as it's the core of dependency injection.

With Inheritance - Yes, through interface implementation.

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   Like      Discuss      Correct / Improve     dependency injection  inversion of control  ioc


 Q11. What could be the driving force to have dependencies injected through class than through config file while using IOC or Dependency Injection ? Design2017-08-18 09:45:24

Ans. Unit Testing

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   Like      Discuss      Correct / Improve     dependency injection  inversion of control




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