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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

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   Like         Discuss         Correct / Improve     java   string comparison   string   object class   ==    equals   object equality  operator     Asked in 289 Companies      basic        frequent

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.

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   Like         Discuss         Correct / Improve     elsevier   test driven design ( TDD )   software development methodologies     Asked in 3 Companies        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.

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   Like         Discuss         Correct / Improve     mvc  design pattern     Asked in 1 Companies        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.


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   Like         Discuss         Correct / Improve          Asked in 23 Companies




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Cerner: Was interviewed for Java position but eventually ... Anonymous

Cerner: Positive Faster Growth Path Parties , Seminars Good ... Anonymous