General - Interview Questions and Answers for 'Infosys' | Search Java Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com
Share

Search Interview Questions


 3235 questions in repository.
 There are more than 200 unanswered questions.
Click here and help us by providing the answer.
 Have a video suggestion.
Click Correct / Improve and please let us know.
Label / Company      Label / Company / Text

   



Infosys


   




General - Interview Questions and Answers for 'Infosys' - 17 question(s) found - Order By Newest

  Q1. Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs
Core Java2017-06-13 08:25:45

Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features

1. Inheritance for Code Reuse
2. Abstraction for modularity, maintenance and agility
3. Encapsulation for security and protected
4. Polymorphism for flexibility and interfacing

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

   Like      Discuss      Correct / Improve     oops  oops features     Trimax IT Infrastructure & Services  Aricent  HCL Technologies   Tata Consultancy (TCS)  Infosys  Cognizant (CTS)  Capgemini  Blue Coat  Symantec  Deegit  Cerner   Verizon  Ancestry  Accenture  Accenture India  Lexis Nexis  Elsevier  Overstock  Sofi  DeCurtis  Appirio  GlobalLogic  Robert Bosch  Lexicon IT  Teleperformance  Ranosys Technologies  InfoObjects  LoginRadius  Pixere  GirnarSoft  In Time Tec  Konstant Infosolutions  Axtria  Infostretch  TatavaSoft  E2logyCroods Consolidates  Elegant MicroWeb  IndiaNIC Infotech  Surekha Technologies  Amnex InfoTechnologies  Wishtree Technologies  Apttus  Majesco  Techsosys  Virtusa  Gruppo Banca Sella  eNoah  Volante Technologies  Karomi  Urjanet  Full Creative  Uniphore Software Systems  Revature  Saggezza  DXC Technology  QBurst  Kott Software  Petrolink Services  RapidValue Solutions  Speridian Technologies  Fingent  Marlabs  Ixigo.com  Bravura Solutions  Amdocs  GSPANN Technologies  Healthkart  Hughes Systique  Prospecta  Fidelity  Mediology Software  Ksolves  InfoGain  Mindfire Solutions  Hays  R Systems  Netrix Technology  HexaView  PayTM  Suncore Microsystem  Remaxys  ANR Software  Impetus Technologies  WittyBrains  InnovationM  Diction Technology  Bhavna Corp  Bristlecone  Fiserv  Quovantis Technologies  InnovationM  Intelligrape Software  PayCraft  Nearbuy  WSE Group  Grappus  MAQ Software  JellyFish Technologies  SysArc Infomatix  MetricStream  Delhivery  Atidan  Experis  NICE  Dark Horse IT  VizExperts  CatalystOne  Syntel  BlackNGreen  InnoEye Technologies  Java R&D  QA InfoTech  HARMAN  Eli Global  Damco Solutions  LensKart  360 Degree  FlipKart  Egen Solutions  AppzCloud Technologies  TechAhead  Yamaha Motor Solutions  Quovantis Technologies  Adobe  Samsung Noida Lab  Lybrate  Novelvox  HSBC Holdings  Fluid AI  Nelito System  GoldenSource  Naaptol  Ashtech Infotech  Mobicule  Future Group  Calypso Technology  Skillnet Solutions  3i Infotech  Nucsoft  InteractCRM  Aurionpro Solutions  Hexaware Technologies  Ness Technologies  Cigniti Inc  ValueLabs  Magnaquest  Mphasis  IVY Comptech  Medlife.com  ServiceNow  Acclaris  Reliance Jio Infocomm  Bentley Systems  Erricson Worldwide  Hyland  Xpanxion  Cerner  Codeclouds IT Solutions  Procentris  Cleocotech International  Divergent Soft Lab  Endevor IT Solution  Impetus Infotech India  Bhaskar Technologies  SeroSoft Solutions  Retina Software  General Atomics  B3 - Brain Behind Brand  Oni Enterprises  Amal Infosystems  Future Focus Infotech  Celcom Technologies  Globez Professional Solutions  Harjai Computers  Pazzo Solutions  Data-Core Systems  Sampoorna Computer People  Trowano Avenues  ezyreach.in  Sandeep Dwellers  Interra Information Technologies  Sellcraft Global Solutions  RJS Tech Solutions  WSE Group  Magna India  Educiting Technologies  Continental Automotive Components India  IBM India  Asap Info Systems  Capgemini  Smart Move Career Consultants  Aeronube Technologies  Skywings Advisors  Diverse Lynx  ProCreations Kolkata  Tickto Solutions  Fresher Jobs  SMVA Consultants  Ixoraa Enterprises  ILabz Technology  2Coms Consulting  Talent Flix  Nat IT Solved   Kopal Consultants LLP  Rebaca Technologies  Techs To Suit Inc  Soffront Software  eDot Health Solutions  MSH Talent Solutions  Techathon Networks LLP  Vara United  Crossover for work  Wedoria Technologies  Golden Opportunities  Minivet System  Maitretech  JS Tech Alliance  BirjaSoft Technologies  BirlaSoft  AwzPact Technologies and Services  MaxGen Technologies  Manker Consultancy Services  I Quest Consultants  ACE Group  Seven Consultancy  WTM It Limited  P R Software  DezVen Software Solution  Aliens Group  EXL Tech Solutions  AcompWorld Technosoft  Eulogik  xtranet technologies  Java RnD   travelex      basic        frequent


Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q2. What is the difference between ArrayList and LinkedList ?Core Java
admin
info@buggybread.com
Ans. Underlying data structure for ArrayList is Array whereas LinkedList is the linked list and hence have following differences -

1. ArrayList needs continuous memory locations and hence need to be moved to a bigger space if new elements are to be added to a filled array which is not required for LinkedList.

2. Removal and Insertion at specific place in ArrayList requires moving all elements and hence leads to O(n) insertions and removal whereas its constant O(1) for LinkedList.

3. Random access using index in ArrayList is faster than LinkedList which requires traversing the complete list through references.

4. Though Linear Search takes Similar Time for both, Binary Search using LinkedList requires creating new Model called Binary Search Tree which is slower but offers constant time insertion and deletion.

5. For a set of integers you want to sort using quicksort, it's probably faster to use an array; for a set of large structures you want to sort using selection sort, a linked list will be faster.

  Sample Code for ArrayList

  Sample Code for LinkedList

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


   Like      Discuss      Correct / Improve     collections   java   data structures   arraylist   linkedlist     Deutsche Bank  Overstock.com  HCL Technologies  Infosys  EBay  The Advisory Board Company  Accuity  JC Penney  Cerner  Chase  Amazon  Deloitte  Deegit  Tata Consultancy  Cognizant (CTS)  IBM  Accenture  Accenture India  Mindtree  ESRI  QwikCilver Solutions  TMC Bonds  GumGum  EMC  Yelp  Classteacher Learning System  FactSet  Simply Hired  SalesForce  Royall & Company  Indeed  eClinicalWorks  TravelClick  State Farm  Manhattan Associates  GoEuro  Veeva Systems  Ness Technologies  Marlabs  Rolta  Volante Technologies  Happiest Minds Technologies  Coviam  Velocify  zanox  SimplyHired  IDBI Intech  Wissen Infotech  Nike  OnDot  PexSupply  Pramati Technologies  Credit Agricole  Mastek  Six Dee Telecom  Accuity  Kellton Tech  conduent  citrix  NEC Technologies  General Atomics      Basic        frequent

Try 1 Question(s) Test


Basic and Very Frequently asked.
  Q3. What is Polymorphism in Java ?Core Java2016-11-06 09:10:54

Ans. Polymorphism means the condition of occurring in several different forms.

Polymorphism in Java is achieved in two manners

1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas

2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding.

  Sample Code for overloading

  Sample Code for overriding

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

   Like      Discuss      Correct / Improve     polymorphism  object oriented programming (oops)  oops concepts  oops concepts     Credit Suisse  Unbounded Solutions  Microsoft   Google  Purch  HCL Technologies  Tata Consultancy (TCS)  Wipro  Mathworks  Accenture  Accenture India  ZonOff  ZapCom  Addteq  Priceline.com  Acute Informatics  Trimax IT Infrastructure & Services   USAA  HCL Technologies  FDM Group  AppEnsure  Inov8  TIAA  Revature  Lockheed Martin  ScotiaBank  Algorhythm Tech  Aurus  Xpanxion  Bitwise Pune  GS Labs  Bitwise India  CRIF  Saggezza  Synchrony  Micro Focus  Mindtree  Zycus  Capgemini  ZapCom Group  Infosys Technologies  SLK Group  Intuit Bangalore  Quickr  Comviva Technology  Altimetrik  IDEALINVENT Technologies  Kewill  coMakeIT  Vekomy Technologies  Eze Software  State Farm  Rolta  State Street  High Radius  Cerner  TIBCO  3i Infotech  Goldman Sachs  ITC  abhra  InteractCRM  Polaris  Naggaro  Siemens  Hexaware Technologies  Skillnet solutions  Logixal Solutions Mumbai  Naaptol Mumbai  Logixal Solutions  NSETECH  Mastek Mumbai  AppAmplify Noida  HexaView Technologies  Wipro  Wittybrains Software Technologies  Meenakshi Noida  Eastern Software Systems Noida  MediaAgility Gurgaon  Daffodil Software  Oracle Gurgaon  Kellton Tech Gurgaon  Bharti Airtel Gurgaon  IHS Markit Gurgaon  Sinew Gurgaon  Grappus Gurgaon  Erricson Gurgaon  Deloitte  Accenture  Accenture India  Tech Mahindra  Patni Computers  L&T Infotech  Mphasis  Mindtree  Hexaware  Collabera  3i Infotech  IGate  Kpit Technologies  NIIT Technologies  Trianz  Persistent Systems  IT Asset  FIA-US  VanGuard  General Atomics      Basic        frequent

Try 2 Question(s) Test


Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc )
  Q4. What is Dependency Injection or IOC ( Inversion of Control ) ?Design

Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.

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

   Like      Discuss      Correct / Improve     design patterns   ioc ( Inversion of Control )  dependency injection     Nucleus Software Exports  HCL Technologies  Tata Consultancy (TCS)  HCL  Infosys  Cognizant (CTS)  Barclays  General Electric  Infosys Technologies  Elsevier  Sabre  ZapCom  Nike  Sogeti  CSG International  Lowes  DWS  Mitsui Bussan Logistics  Payment Processing Partners  Liquidnet  AmTrust Financial  VectorForm  Cybage  Vanderbilt University  Cigniti  Accenture  Accenture India  Ball Aerospace  GE Healthcare  1-800 Contacts  VinSolutions  Arrow Electronics  Monitise  Avenue Code  Thetus Corporation  Shodogg  Levi9  BuildLinks  Suyati Technologies  Kanerika Software  Alliance Inspection Management  Promega  Victorious  Zoll Data Systems  Parkmobile  PerceptiMed  Crate and Barrel  Carbonite  Concur  Codazen  GlobalLogic  AccuSoft  Attinad  Tillster  AppRiver  TrustPilot  Pearson  Kony  Art Technology Group  VeriSign  Accion Labs  IGS Energy  National Bankruptcy Services  RealPage  Green Dot  Indecomm Global  bebo Technologies  Open Solutions  Xoriant  NCR  Macmillan Cancer Support  NetSuite  Asynchrony Labs  DealDash  Vizio  Fiserv  Federal Reserve Bank of Minneapolis  Tinder  FICO  Trustwave      intermediate        frequent


Frequently asked. Among first few questions in the J2EE segment of interview.
  Q5. What is deployment descriptor ?

or

What is the use of deployment descriptor ?
Java EE2016-06-04 22:46:40

Ans. Deployment Descriptor which is usually web.xml is used to specify the classes, resources and configuration of the application and how the web server uses them to serve web requests.This file is usually added to WEB-INF folder and contains following

* Servlet entries and url mapping
* Plugins
* Some info regarding authentication / filters
* Landing Page
* Event Handlers

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

   Like      Discuss      Correct / Improve     web.xml   servlets  deployment descriptor     The NewBury Corp  Fast Dolphin  uCertify  General Electric  Cognizant (CTS)  Web coop  HCL Technologies  Tara Consultancy (TCS)  Wipro  Infosys  Cognizant (CTS)  Sonatype  IBM  computer science corporation (CSC)  American Express      basic        frequent

Try 1 Question(s) Test


Very Frequently asked Spring question.
  Q6. What is bean auto wiring?Spring
Admin
info@buggybread.com
Ans. The Spring container is able to autowire relationships between collaborating beans. This means that it is possible to automatically let Spring resolve collaborators (other beans) for your bean by inspecting the contents of the BeanFactory without using and elements.

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

   Like      Discuss      Correct / Improve     j2ee   spring   mvc   frameworks   web applications   autowiring   beans   at&t   ge     Infosys  HCL Technologies  Tata Consultancy  Wipro  PwC  Tech Mahindra  AT&T  General Electric  Sophos        frequent


  Q7. Which Software Development methodology is being used in your current Job ?General
Admin
info@buggybread.com
Ans. We are using Agile methodology. I attend daily stand up where the development leads takes the status of assigned stories, achievements, any bottlenecks or challenges. We follow iteration of 2 weeks.

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

   Like      Discuss      Correct / Improve     sdlc   agile methodology   software system analyst   software developer interview   development lead   project lead interview     Western Governors University  HCL Technologies  Tata Consultancy Services (TCS)  Infosys  Motorola Solutions  Spillman Technologies  One Click Retail  Bloomberg  Canopy Tax  Accenture  Accenture India  Ancestry  Overstock.com  Priceline        frequent


  Q8. Explain the challenging problems you faced recently and how you overcame it ?General

Ans. [Open Ended Answer]

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

   Like      Discuss      Correct / Improve     elsevier   open ended questions   overstock.com   cerner     Overstock.com  Elsevier  Infoview Technologies  Syntel  Hexaware  Yahoo  Nationwide  GE Transportation  Concur  MH Alshaya  Infosys  Capital One  HCL Technologies  Ann Arbor  PowerAdvocate        frequent


Very Frequently asked to Senior Software Engineers or Developers.
  Q9. Describe some of the Design Patterns you have used ?Design2016-12-01 16:31:17

Ans. [Open Ended Answer]

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

   Like      Discuss      Correct / Improve     design patterns     Goldman Sachs  Lexis Nexis  Elsevier  HCL Technologies  Tata Consultancy (TCS)  Infosys Technologies  Fidelity Investments  Nucleus Software Exports  General Electric  Cognizant (CTS)  Amdocs  MathWorks  Xebia  Goldstone technologies  Horizon Solutions  ECI Telecom  One Click Retail      intermediate        frequent



Do you think these are the Best Java Frameworks ?

OpenXavaSPRING MVCApache StripesCheck everything
that is Best in Java

Click Here



  Q10. Difference between Array and ArrayList ?Core Java2016-12-15 14:13:12

Ans. <a href="http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html" rel="nofollow">http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html</a>

  Sample Code for ArrayList

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

   Like      Discuss      Correct / Improve     array  arraylist     Accenture  Accenture India  Capgemini  HCL Technologies  Infosys  Tata Consultancy (TCS)  Revature  Siemens  Mindtree  Sopra Steria  General Atomics      basic        frequent


 Q11. 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


 Q12. What is abstraction ?2017-10-13 09:23:38

Ans. Abstraction is a process of hiding the implementation details and describing only the functionality to the user.

 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  Accenture India  Polaris  IBM  eGov Jamaica  Skillnet Solutions  Mastek  Avvo  Computer Science Corporation (CSC)  Revature  Erricson  Allianz  Fidelity Information Services (FIS)


  Q13. Explain OOps concepts.Core Java2017-12-25 17:29:13

Ans. There are four main OOP concepts in Java. These are:

Abstraction. Abstraction means using simple things to represent complexity. We all know how to turn the TV on, but we don?t need to know how it works in order to enjoy it. In Java, abstraction means simple things like objects, classes, and variables represent more complex underlying code and data. This is important because it lets avoid repeating the same work multiple times.

Encapsulation. This is the practice of keeping fields within a class private, then providing access to them via public methods. It?s a protective barrier that keeps the data and code safe within the class itself. This way, we can re-use objects like code components or variables without allowing open access to the data system-wide.

Inheritance. This is a special feature of Object Oriented Programming in Java. It lets programmers create new classes that share some of the attributes of existing classes. This lets us build on previous work without reinventing the wheel.

Polymorphism. This Java OOP concept lets programmers use the same word to mean different things in different contexts. One form of polymorphism in Java is method overloading. That?s when different meanings are implied by the code itself. The other form is method overriding. That?s when the different meanings are implied by the values of the supplied variables. See more on this below.

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

   Like      Discuss      Correct / Improve     oops  oops concepts     Clarivate Analytics  Neterson Technologies  Infogain  Deegit  HCL Technologies  Tata Consultancy (TCS)  Infosys Technologies  Mastercard  Priceline  General Atomics      basic        frequent


 Q14. What is your role in current project ?General2018-05-03 06:18:38

Ans. Possible Answer - Java Developer

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

   Like      Discuss      Correct / Improve          Accela  Flatiron  Hcl Technologies  Infosys Technologies  Motorola Solutions


 Q15. Why do you want to leave your current job ?General2018-05-11 07:39:41

Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career

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

   Like      Discuss      Correct / Improve          HCl Technologies   Tata Consultancy (TCS)  One Click Retail  Motorola Solutions  Accela  Elsevier  Coupang  Mahindra Satyam  GlobalLogic  One Click Retail  Accenture  Accenture India  Infosys Technologies  Western Governors University (WGU)  vivint smart home  Spillman Technologies  Lexis Nexis  Sprint  Cumulus Systems  Mastercard  Priceline


 Q16. What is garbage collection ?Core Java2018-05-13 07:44:17

Ans. The garbage collection is a facility wherein a program runs on the Java Virtual Machine which gets rid of objects, which are not being used by a Java application anymore. It is a form of automatic memory management and recollection.

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

   Like      Discuss      Correct / Improve          Playtech  HCL Technologies   Infosys Technologies  General Atomics


 Q17. What methodology and technology stack do you use ?General2018-05-22 06:05:55

Ans. [Open Ended Answer]

Possible Answer - We are using Agile. We have daily standups, Bi weekly Backlog Grooming , Planning and Retrospective, We have a 2 week sprint and We use Jira for Scrum Management. We are using Java 8, Spring Boot, JSF , Apache Kafka , Soap as well as Rest Services.

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

   Like      Discuss      Correct / Improve          Expedia  HCL Technologies  Mastercard  Infosys Technologies  Lexis Nexis  Spillman Technologies  Western Governors University (WGU)  Priceline  Cumulus Systems




Subscribe to Java News and Posts. Get latest updates and posts on Java from Buggybread.com
Enter your email address:
Delivered by FeedBurner



comments powered by Disqus
 

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.

Any input from you will be highly appreciated and It will unlock the application for 10 more requests.

Company Name:
Questions Asked:
         

X Close this

Infosys: Was interviewed for the Chandigarh Unit. Some ... Anonymous