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Interview Questions and Answers for 'Kony Labs' - 4 question(s) found - Order By Newest

Very frequently asked in different variations. Frequently asked in Deloitte ( 2 feedback ) , HCL Tech ( 3 feedback ) and Coginizant (CTS)
  Q1. Explain the scenerios to choose between String , StringBuilder and StringBuffer ?

or

What is the difference between String , StringBuilder and StringBuffer ?
Core Java
Anonymous
Ans. If the Object value will not change, use String Class because a String object is immutable.

If the Object value can change and will only be modified from a single thread, use StringBuilder because StringBuilder is unsynchronized(means faster).

If the Object value may change, and can be modified by multiple threads, use a StringBuffer because StringBuffer is thread safe(synchronized).

  Sample Code for String

  Sample Code for StringBuffer

  Sample Code for StringBuilder

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Very Frequently asked to fresh graduates and less experienced. Favorite question in Walk in drives.
  Q2. Difference between Overloading and Overriding ?Core Java
Anonymous
Ans. Overloading - Similar Signature but different definition , like function overloading.

Overriding - Overriding the Definition of base class in the derived class.

  Sample Code for overloading

  Sample Code for overriding

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 Q3. Write program to create a linked list and perform different operations on it.Algorithm2017-02-24 14:18:01

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


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   Like      Discuss      Correct / Improve     Linkedlist  data structures  algorithm     Kony Labs      basic


 Q4. write program to do matrix multiplicationCore Java2017-02-24 14:18:15

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


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   Like      Discuss      Correct / Improve          Kony Labs




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