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Design - Interview Questions and Answers for 'Infor' - 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 ) and Epam Systems
  Q1. Difference between == and .equals() ?Core Java
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   == vs equals   equals vs ==     Asked in 294 Companies      basic        frequent

Try 6 Question(s) Test


 Q2. What is abstraction ?Design
Ans. Abstraction is a process of hiding the implementation details and describing only the functionality to the user.

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   Like         Discuss         Correct / Improve     bstraction  oops concepts  oops principle     Asked in 22 Companies


Frequently asked in face to face interviews.
  Q3. Write a program to print fibonacci series.Core Java
Ans. int count = 15;
int[] fibonacci = new int[count];
fibonacci[0] = 0;
fibonacci[1] = 1;
for(int x=2; x < count; x++){
fibonacci[x] = fibonacci[x-1] + fibonacci[x-2];
}

for(int x=0; x< count; x++){
System.out.print(fibonacci[x] + " ");
}

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   Like         Discuss         Correct / Improve     ebay   fibonacci series     Asked in 66 Companies      basic        frequent


 Q4. Can you explain software design principles cohesion and coupling with an example?Design
 This question was recently asked at 'Fidelity Information Services (FIS)'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     cohesion  coupling     Asked in 1 Companies        frequent



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