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

Very Very frequently asked. Among the first few questions in almost all interviews.Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys etc, Based on multiple feedback )
  Q1. Difference between == and .equals() ?Core Java
Anonymous
Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory.

x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object.

Sample code:

String x = new String("str");
String y = new String("str");

System.out.println(x == y); // prints false
System.out.println(x.equals(y)); // prints true

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   Like      Discuss      Correct / Improve     java   string comparison   string   object class   ==    equals   object equality     Ebay  Cerner  GuideWire  Expeditors Associate  Revature  SAIC  ValueLabs  Realty Redefined  Bank Of America  Capgemini  HCL Technologies  Goldman Sachs  Symmetric Corp  Backstop Solutions  Frontier  IQOR   Science  Vanguard  eClinicalWorks  Experticity  Blue Cross and Blue Shield of Kansas  ComTrade  Banja Luka  Overstock.com  Intrasoft International  IBM  Apex Systems  infoview technologies  Ebix  Cumulus Systems      basic        frequent

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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

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

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 Q3. Scale yourself on Java on the scale of 1 to 10General2017-01-11 15:48:29

Ans. [Open Ended Answer]

The objective of the question is to check how efficient one is in the language so that appropriate level questions are asked. Don't tell too high number if you are being interviewed for a junior or mid level position as the interviewer may throw advance level questions.

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

   Like      Discuss      Correct / Improve          Overstock.com  Revature  Incture Technologies  Nucsoft  Wipro  HCL Technologies  Tata Consultancy (TCS)  Infosys  Cerner  Nucsoft  Incture Technologies  macys  F5 Networks  IVY Comptech  Rubicon Project  Sogeti  AllState


 Q4. What is abstraction ?2017-10-13 09:23:38

 This question was recently asked at 'Tata Consultancy (TCS),HCL Technologies,Infosys,Deegit,Barclays,General Electric (GE),Capgemini,Accenture,Polaris,IBM,eGov Jamaica,Skillnet Solutions,Mastek,Avvo,Computer Science Corporation (CSC),Revature,Erricson,Allianz,Fidelity Information Services (FIS)'.This question is still unanswered. Can you please provide an answer.


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

   Like      Discuss      Correct / Improve          Tata Consultancy (TCS)  HCL Technologies  Infosys  Deegit  Barclays  General Electric (GE)  Capgemini  Accenture  Polaris  IBM  eGov Jamaica  Skillnet Solutions  Mastek  Avvo  Computer Science Corporation (CSC)  Revature  Erricson  Allianz  Fidelity Information Services (FIS)




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