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Interview Questions and Answers for 'Nagarvision' - 5 question(s) found - Order By Newest

  Q1. Explain static blocks in Java ?Core Java
Anonymous
Ans. A static initialization block is a normal block of code enclosed in braces, { }, and preceded by the static keyword. Here is an example:

static {
// whatever code is needed for initialization goes here
}

A class can have any number of static initialization blocks, and they can appear anywhere in the class body. The runtime system guarantees that static initialization blocks are called in the order that they appear in the source code.

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   Like      Discuss      Correct / Improve     java   oops   static   static block     Daffodil  Visa Inc  Logica  DataMetica  Tech Mahindra  Nagarvision      basic        frequent


Usually asked only to fresh graduates and less experienced developers.
  Q2. What is a daemon thread? Give an Example ?
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Ans. These are threads that normally run at a low priority and provide a basic service to a program or programs when activity on a machine is reduced. garbage collector thread is daemon thread.

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Try 2 Question(s) Test


  Q3. What is the use of HashCode in objects ?Core Java
Admin
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Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc.

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 Q4. What is a ConcurrentHashMap ?Core Java
Admin
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Ans. ConcurrentHashMap is a hashMap that allows concurrent modifications from multiple threads as there can be multiple locks on the same hashmap.

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 Q5. Explain Binary SearchAlgorithm2018-02-02 08:37:31

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


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   Like      Discuss      Correct / Improve     search  binary search     Nagarvision      basic        frequent




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