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

Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini 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

  Sample Code for equals

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


   Like      Discuss      Correct / Improve     java   string comparison   string   object class   ==    equals   object equality  operator     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  Nakisa  United HealthGroup (UHG)  Sopra Steria  TrueCaller  Mphasis  Amdocs  T & A Hr Solutions  End2End Catalyst  Code Garage Tech  IQuest Management Consultants  Indianmesh pvt ltd  Netsmartz  Meander Software  UrbanPro.com  Netrovert Software  T & A Hr Solutions  Zscaler  Maven Wave Partners  Basware India  Emerson  GCE solutions  SmartData Enterprise  Shivark Virtual Academy  FinXera  Sampoorna Consultants  Samridhi  KKA 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Try 6 Question(s) Test

 Q2. Explain TDD or Test Driven Design ?Design

Ans. TDD is a development process that involves short iterations: first an automated test case is written. Then, the code is written to pass that test, and finally one refactors the new code to acceptable standards.

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

   Like      Discuss      Correct / Improve     elsevier   test driven design ( TDD )   software development methodologies     Elsevier  Deegit  Cerner        frequent

 Q3. What is MVC in GUI components ?Design2018-06-30 13:52:48

Ans. The Model/View/Controller pattern, a strategy for dividing responsibility in a GUI component.

The model is the data for the component.

The view is the visual presentation of the component on the screen.

The controller is responsible for reacting to events by changing the model.

According to the MVC pattern, these responsibilities should be handled by different objects.

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

   Like      Discuss      Correct / Improve     mvc  design pattern     Cerner        rare

 Q4. What is OSGI ?2018-07-13 12:37:34

 This question was recently asked at 'Cerner,Symantec,Adobe,VMWare,Jcr Design Group,Pyramid IT,SEA Software,Amiti Consulting,Ameya Info Technologies,Highbrow Technologies,Coresecure,Analyst Infotech,Holland America,Twin Technologies,DiamondPick,Tanisha Systems,Cengage,Blue Coat,Coxit,LionBridge Technologies,Intersources Inc,Pavlov Media,HumanMinds'.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          Cerner  Symantec  Adobe  VMWare  Jcr Design Group  Pyramid IT  SEA Software  Amiti Consulting  Ameya Info Technologies  Highbrow Technologies  Coresecure  Analyst Infotech  Holland America  Twin Technologies  DiamondPick  Tanisha Systems  Cengage  Blue Coat  Coxit  LionBridge Technologies  Intersources Inc  Pavlov Media  HumanMinds


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