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

 Q1. What is a ConcurrentHashMap ?Core Java
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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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   Like         Discuss         Correct / Improve     java   collections   hashmap   map   concurrenthashmap   concurrenthashmap  concurrency   general electric   ge     Asked in 32 Companies        rare


  Q2. 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     Asked in 16 Companies      basic        frequent


Usually asked only to fresh graduates and less experienced developers.
  Q3. 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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   Like         Discuss         Correct / Improve     java   threads   multi threading   operating system   daemon thread   garbage collection     Asked in 10 Companies      intermediate        frequent

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  Q4. What is the use of HashCode in objects ?Core Java
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Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc.

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   Like         Discuss         Correct / Improve     java   string   hashcode   hash code   string comparison  hashtable     Asked in 17 Companies      basic        frequent


 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     Asked in 1 Companies      basic        frequent




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