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Design - Interview Questions and Answers for 'Ola' - 4 question(s) found - Order By Newest | |||||||||||
Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews. | |||||||||||
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Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ). A class can extend single abstract class whereas it can implement multiple interfaces. | |||||||||||
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Like Discuss Correct / Improve  java   classes   abstract class   interfaces   abstract class vs interface   abstract classes vs interfaces Asked in 82 Companies basic   frequent | |||||||||||
Very frequently asked.Usually among first few questions. | |||||||||||
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Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application 1. Controller receives the requests and handles overall control of the request 2. Model holds majority of the Business logic, and 3. View comprise of the view objects and GUI component | |||||||||||
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Like Discuss Correct / Improve  j2ee   mvc   mvc design pattern   design pattern   struts   spring   web application   web frameworks   ebay Asked in 60 Companies basic   frequent | |||||||||||
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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. | |||||||||||
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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 | |||||||||||
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