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Interview Questions and Answers for 'Adp' - 15 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     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 Technologies  bebo technologies  Closeloop Technologies  DamcoSoft  Swar Yantra Technologies  SK VedaInfo Universal  Trantor Software  IT HAT Consulting  Kindlebit Solutions  Mann McGlynn  AmrtData Enterprises  Riconz Technologies  Embryo Software Solution  Corporate Stalwarts  Varite  Mirror Consultancy Service  Wing Global IT Service  Regence  Adpearance  IGNW  Centizen  Flexton  Syntel  Kaiser Permanente  SkiData  New Relic  McKesson  Finastra  Pivotal  UST Global  Morgan Stanley  Kroger  Genesys  Guardian Life  SynergisticIT  Leidos  Expeditors Associate  Polycom  Compass  Point ClickCare  Expedia  Equal Experts  Dimentrix  Intellect Design Arena  Epam Systems  Qualys  Instacart  ThoughtWorks  Maxgen Technologies  Aayansh Germinate  Principal Financial Group  NineScript Technologies  Nihilent  infrasoft technologies  e-Zest Solutions  Krawler Inc  FundTech  BNT SOFT  SAPsphinx Infotech  KinderTouch  Accede Software Solutions  LeadLake  Emerson  Xoriant  Citrix  Anonymous Content  GS Lab  Thermax  Saama Technologies  Fresherworld.com  Nityo Infotech  Sanofi  Innoplexus  Sears IT & Management Services   National Stock Exchange of India  Accelya Kale  Tudip Technologies  ITSource Technologies  Sela Technology Solutions  Eternus Solutions  Raja Software Labs  Leo TechnoSoft  Shubham Housing Development Finance  Serene Corporation  Leo Technosoft  Questionpro  Sparken IT Solutions  Capsilon  JetSynthesys  MangoSpring  Subway  Arezzo Sky  Lenco Diagnostic Laboratories  Finlogic Technologies  Maxxton  Cerillion  Applus+  XOYAL  Acloudzyn Technologies  ITYX  Tej IT Solutions  Transworld Compressor Technologies  Deskera  Ebaotech  Kahuna Systems  Kimaya Infotech  SSP Technology  Boston Byte  Bonellisoft  Rack Infotech  Intellection Software and Technologies  OMVSAB IT Solutions  ProductDossier  Soft Infology  Systems Plus Transformations  StackMint  HeadInfotech India  EffortSys  KasNet Technologies  Java City  iSynergy TechSys  Unisoft Technologies  Servient  ThinkQuotient Software  Medline Industries  Ascent Cyber Solutions  Proto-T Solutions  Tinker Technologies  Censhare  Proto-T Solutions  Henx International Technologies  AlightHub Consulting Services  Perpetual Infotech  BestoSys  Infiniti Infosystems  Torqus  Spectrum Tech System  OreInfo  Sanvi Softech  Neptune Solutions  XTime  Web Hub Technology  Coin Technologies  Paramount Pictures  Rocklike DMS  Implant Technosoft Solutions  Nabla Infotech  Predikly  Godwit Technologies  Kanaka Consulting  Aarnum Technologies  Ganesh Kapure  Abhinav Digicompsoft Services  Shoffex.com  Online Training Solutions  A Plus Tree  OMM Software Innovation  Tanish Infotech Solution  Zinist Software  Mobile Sutra  Playpixel Infosystem  SunGuard  Nihilent  Siemens PLM Software  Maxgen Technologies  Nitor Infotech  Mediaocean  Yagna iQ  Sigma Systems  Ethon  The Permanente Medical Group  Reliance Industries  MindCraft Software  ABM Knowledgeware  Trutech Web Solutions  Nikhil R Gupta & Associates  eMeasurematics  NovelERP Solutions  Web Element Solutions  HDFC Bank  Qualcomm  Intellect Design Arena  Diebold Nixdorf  Sharekhan  Pepperfry  IRIS Business Services  Wind World  ZEDO  Loylty Rewardz Mngt  C2L Biz  Chenoa Information Services  Insolutions Global  Vakrangee Softwares  Celusion Technologies  Currencies Direct  Zenith System Solutions  Base Information Management  Exponentia DataLabs  Realty Redefined  Constaccent  Neoquant Solutions  Aureus Analytics  Planfirma Technologies  Pawaa Software  iBhejo  Fairfax County Virginia  American Conservation Experience  Hari Krishna Exports  Core Education & Technologies   Nishat Mills  Industrial Market Place  Krisnela Technologies  Swissclear Global  Samyak Software  Professional Access  Nexstep Infotech  Concerto Software  Viral Technologies  Silverwing Technologies  Gcom Software Inc  Accel Frontline  Atom Technologies  Blue Star Infotech  Cynapse  Datamatics Global Services  Flytxt Mobile Solutions  Persistent Systems  Onmobile Global  Trianz  Sasken  WNS Global Services  Tavant technology  Edz Infomatics      basic        frequent

Try 6 Question(s) Test


Frequently asked.
 Q2. If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ?Core Java
Admin
info@buggybread.com
Ans. ArrayList are implemented in memory as arrays and hence allows fast retrieval through indices but are costly if new elements are to be inserted in between other elements. LinkedList allows for constant-time insertions or removals using iterators, but only sequential access of elements

1. Retrieval - If Elements are to be retrieved sequentially only, Linked List is preferred.

2. Insertion - If new Elements are to be inserted in between other elements , Linked List is preferred.

3. Search - Binary Search and other optimized way of searching is not possible on Linked List.

4. Sorting - Initial sorting could be pain but lateral addition of elements in a sorted list is good with linked list.

5. Adding Elements - If sufficiently large elements needs to be added very frequently ,Linked List is preferable as elements don't need consecutive memory location.

  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     java   collections   list   arraylist   linkedlist   difference between   architecture   data structure   ebay     ADP  General Atomics      basic        frequent

Try 2 Question(s) Test


 Q3. What are the design considerations while making a choice between using interface and abstract class ?Core Java
Anonymous
Ans. Keep it as a Abstract Class if its a "Is a" Relationsship and should do subset/all of the functionality. Keep it as Interface if its a "Should Do" relationship.

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   Like      Discuss      Correct / Improve     java   oops   abstract classes   interfaces   advanced     ADP  AI corporation  Equator Business Solutions


 Q4. What are some different logging levels for log4j ?Log4j
Admin
info@buggybread.com
Ans. DEBUG
ERROR
ALL
WARN
INFO
FATAL
OFF
TRACE
TRACE_INT
WARN

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

   Like      Discuss      Correct / Improve     java   log4j   log4j level   logging   error logging     CrimsonLogic  Infosys  ADP  FICO  Comcast  Accenture  Accenture India  Credit Suisse  HCL Technologies  Tata Consultancy (TCS)


 Q5. What is a cloneable interface and what all methods does it contain?Core Java
Admin
info@buggybread.com
Ans. Cloneable is a declaration that the class implementing it allows cloning or bitwise copy of it's object state. It is not having any method because it is a MARKER interface.

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

   Like      Discuss      Correct / Improve     java   oops   cloneable   marker interface  cloning     ADP


 Q6. What are the benefits of using Prepared statements ?Database2017-03-09 11:32:07

Ans. 1. Precompilation , DB-side caching and reuse of same execution plan leads to overall faster execution.

2. Automatic prevention of SQL injection attacks by escaping special characters

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

   Like      Discuss      Correct / Improve     Prepared statements  benefits of prepared statements     ADP

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 Q7. What are the benefits of using prepared statements ? Does that benefit extend only if similar prepared statements are used within a application or it extends even with multiple applications having similar prepared statement ?Database2017-03-09 11:33:25

Ans. Prepared Statements helps in reuse of database execution plan which can be cached at Database level and hence helps achieving faster execution and performance. As cached ps objects are creating at Database level and not application level, the use and benefit extends across multiple applications.

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

   Like      Discuss      Correct / Improve     Prepared statements  benefits of prepared statements     ADP

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 Q8. Where the prepared Statement object creating - In Java application or DB ?Database2017-03-09 11:33:57

Ans. Prepared Statement objects are created and cached at database level.

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

   Like      Discuss      Correct / Improve     Prepared statements     ADP

Try 1 Question(s) Test


 Q9. What are the types of Executor Interfaces ?Core Java2017-03-09 11:37:29

Ans. Executor - Simple Interface that supports launching new tasks.

ExecutorService - Subinterface of Executor, which adds features that help manage the lifecycle, both of the individual tasks and of the Executor itself.

ScheduledExecutorService - Subinterface of ExecutorService, supports future and-or periodic execution of tasks.

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

   Like      Discuss      Correct / Improve     Executor Interfaces     ADP



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 Q10. What are the core interfaces in Hibernate?Hibernate2017-03-09 11:37:41

Ans. Session,SessionFactory,Configuration,Transaction,query and Criteria

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   Like      Discuss      Correct / Improve     core interfaces of Hibernate     ADP        frequent

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 Q11. If two Interfaces have same Method, how to handle that Method in a Class implementing these two Interfaces?Core Java2017-03-09 11:37:59

Ans. It doesn't matter how you define that method in implementing class. there will be only one definition provided and that method can be accessed using reference of either of the interfaces.

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

   Like      Discuss      Correct / Improve          ADP


 Q12. Which type of EJB can use bean pooling?Java EE2017-03-09 11:38:12

Ans. Stateless Session Beans

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   Like      Discuss      Correct / Improve     EJB  java beans     ADP


 Q13. Difference between Include Directive and include action in jspJava EE2017-03-09 11:38:45

Ans. Include directive includes the file at translation time (the phase of JSP life cycle where the JSP gets converted into the equivalent servlet) whereas the include action includes the file at runtime.

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

   Like      Discuss      Correct / Improve     JSP  include directive  include action     ADP


 Q14. Difference between import and include directive in jspJava EE2017-03-09 11:39:09

 This question was recently asked at 'ADP'.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     JSP  import and include directive in jsp     ADP


  Q15. Difference between == and === ?JavaScript2018-07-04 16:16:18

Ans. == compares values === is used in scripting languages for comparing two values as well as there data tpe. like in js,php.

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

   Like      Discuss      Correct / Improve     ==  ===  == vs ===     Symantec  Deloitte  At&T  Microsoft  Schweitzer Engineering Laboratories  ADP  Splunk  HCL Technologies  Tata Consultancy (TCS)  Accenture  Accenture India  Salesforce  Amdocs      basic        frequent




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