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Core java - Interview Questions and Answers for 'Dell' - 4 question(s) found - Order By Newest

  Q1. What is a Lambda Expression ? What's its use ?Core Java
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Ans. Its an anonymous method without any declaration.

Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code.

It promotes Developer productivity, Better Readable and Reliable code.

  Sample Code for lambda

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   Like      Discuss      Correct / Improve     java   java8   lambda expression   architecture     Axxess  CACI  ZonOff  Dell India  Wellington Management  N26  Lithium Technologies  DST Systems  Overstock  Sofi      expert        frequent

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 Q2. What is the use of constructors in Java ?Core Java2017-04-07 10:13:18

Ans. Constructors are used to initialize the state of an object. If there are no constructor , objects won't have any initialized state and hence it's elements may contain garbage values. If the memory were used as is, the behavior of the object would also be unpredictable.

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   Like      Discuss      Correct / Improve     constructor     SVS Technologies  Accenture  Levi9  Dell


 Q3. What is an Interface ?Core Java2018-01-20 12:18:59

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


  Sample Code for interface

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   Like      Discuss      Correct / Improve     interface     Adella      basic        frequent


 Q4. Which is the best collections for maintaining elements in an order ?Core Java2018-06-06 09:11:03

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


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   Like      Discuss      Correct / Improve          Dell




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