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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

 Help us improve. Please let us know the company, where you were asked this question :   


   Like         Discuss         Correct / Improve     java   java8   lambda expression   architecture     Asked in 57 Companies      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     Asked in 5 Companies


 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     Asked in 1 Companies      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          Asked in 1 Companies




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