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

Search Interview Questions


 3154 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

   



Interview Questions and Answers for 'Google' - 12 question(s) found - Order By Newest

Basic and Very Frequently asked.
  Q1. 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


Frequently asked in all types of companies especially Indian Services companies. Frequently asked in CTS (Based on 2 feedback)
  Q2. What is the use of hashcode in Java ?Core Java
Anonymous
Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc. The value received from hashcode() is used as bucket number for storing elements. This bucket number is the address of the element inside the set/map. when you do contains() then it will take the hashcode of the element, then look for the bucket where hashcode points to and if more than 1 element is found in the same bucket (multiple objects can have the same hashcode) then it uses the equals() method to evaluate if object are equal, and then decide if contain() is true or false, or decide if element could be added in the set or not.

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


   Like      Discuss      Correct / Improve     java   collections   hashcode   advanced  hashtable     Cognizant (CTS)  Compro Technologies  VigLink  Proofpoint  Accolite  Foot Locker  IMC Trading  LG Mobile Phones  Probity Soft  EPPS Infotech  AbeBooks  LiquidNet  Google  Girmiti Software  Hashcode IT Solutions  Aurionpro Solutions  Insonix  Genpact  Trentor  CatalystOne Solutions  RedBlink  Bayatree Infocom  Security Weaver  Steg Technologies  Roshi Software Solutions  DreamSoft4u  Decipher Zone Softwares  Precise Automation & Robotics  Componence  Dainik Navajyoti  Bodacious IT Hub  Naggaro      intermediate        frequent

Try 1 Question(s) Test


Advanced level question usually asked in High end product companies. Have been asked in Google and Amazon (Based on 1 Feedback)
  Q3. Describe, in general, how java's garbage collector works ?Core Java
Anonymous
Ans. The Java runtime environment deletes objects when it determines that they are no longer being used. This process is known as garbage collection. The Java runtime environment supports a garbage collector that periodically frees the memory used by objects that are no longer needed. The Java garbage collector is a mark-sweep garbage collector that scans Java dynamic memory areas for objects, marking those that are referenced. After all possible paths to objects are investigated, those objects that are not marked (i.e. are not referenced) are known to be garbage and are collected.

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


   Like      Discuss      Correct / Improve     java   garbage collection   java memory management   advanced     LinkedIn  Infosys  Google  Netflix  Amazon  Huawei Technologies  JP Morgan  enGenius  CitiusTech  Goldman Sachs  Bank Of America India  Salesforce  Addteq  Criteo  Capgemini  Horizon Solutions  Way dot com  Mphasis  TrueCaller  Intel  Symantec      intermediate        frequent

Try 4 Question(s) Test


 Q4. Write a program to print the index of the first non repeated character in a java stringCore Java2017-01-27 18:30:21

Ans. public class BuggyBread1{
public static void main (String args[]) {
   String str = "hheello world";
   char[] charArray = str.toCharArray();
   char selectedChar = 'a';
   for(char char1: charArray){
      if(!str.contains(Character.toString(char1).concat(Character.toString(char1)))){
         selectedChar = char1;
         break;
      }
   }
   System.out.println(str.indexOf(Character.toString(selectedChar)));
}
}

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

   Like      Discuss      Correct / Improve     string  code  coding     Audible  Bluewolf  WorkDay  Symantec  Rubicon  Amazon  Expedia  A9.com  Google


 Q5. If you have access to a function that returns a random integer from one to five, write another function which returns a random integer from one to seven.Core Java
Admin
info@buggybread.com
Ans. We can do that by pulling binary representation using 3 bits ( random(2) ).

getRandom7() {
   String binaryStr = String.valuesOf(random(2))+String.valuesOf(random(2))+String.valuesOf(random(2));
   binaryInt = Integer.valueOf(binaryStr);
   int sumValue=0;
   int multiple = 1;
   while(binaryInt > 0){
      binaryDigit = binaryInt%10;
      binaryInt = binaryInt /10;
      sumValue = sumValue + (binaryDigit * multiple);
      multiple = multiple * 2;
   }
}

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

   Like      Discuss      Correct / Improve     java   tricky question   interesting questions   google interview questions   random


 Q6. What are fail-fast Iterators ?Core Java2016-06-09 09:27:36

Ans. Fail-fast iterators detect illegal concurrent modification during iteration and fail quickly and cleanly rather than risking arbitrary, non deterministic behavior at an undetermined time in future. Example could be of an Iterator failing if it smells ConcurrentModificationException.

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

   Like      Discuss      Correct / Improve     fail-fast Iterators  Iterators     Roposo  Elitecore Technologies  Google  InfoTrellis  Infosys      intermediate


 Q7. Given two files with list of words, write a program to show the common words in both filesCore Java2017-01-28 11:31:20

 This question was recently asked at 'Google'.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     file handling  file io  code  coding     Google


Frequently asked in high end product companies.
 Q8. Write code for LRU CacheCore Java2017-01-10 10:15:17

 This question was recently asked at 'United Health Group (UHG),Google,Zenefits,Amazon,Microsoft,SurveyMonkey,LinkedIn,Sanpdeal,MarkMonitor,Bloomberg'.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     cache  LRU cache  coding  code     United Health Group (UHG)  Google  Zenefits  Amazon  Microsoft  SurveyMonkey  LinkedIn  Sanpdeal  MarkMonitor  Bloomberg      intermediate


 Q9. Write a Program to check number of occurrences of one string within another ? Core Java2017-01-27 14:44:07

Ans. public class Class{
   public static void main(String[] args){
      String string1 = "Hello I am Jack. I live in United States. I live in california state.";

      String string2 = "I live in";

      int startIndex = 0;
      int endIndex = string1.length()-1;

      int countNoOfOccurences = 0;

      String remainingString = string1;

      while(startIndex < endIndex){
         if(remainingString.indexOf(string2) != -1){
            countNoOfOccurences++;
            startIndex = remainingString.indexOf(string2) + string2.length();
            remainingString = remainingString.substring(startIndex);
         } else {
            break;
         }
      }

      System.out.println(countNoOfOccurences);
   }
}

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

   Like      Discuss      Correct / Improve     string  code  coding     Google  Zoho



Do you think these are the Best Java Frameworks ?

OpenXavaSPRING MVCApache StripesCheck everything
that is Best in Java

Click Here



 Q10. Given a graph, find if it represents a treeAlgorithm2017-03-03 14:41:06

 This question was recently asked at 'Google'.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          Google


  Q11. Find Intersection/union between two arrays.Core Java2018-05-13 19:40:34

 This question was recently asked at 'Bristlecone,Amazon Lab126,Amazon,Microsoft,Facebook,NCR,Google'.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     arrays  code  coding     Bristlecone  Amazon Lab126  Amazon  Microsoft  Facebook  NCR  Google        frequent


  Q12. Write code to sort an array.Algorithm2018-07-04 16:15:16

Ans. https://www.geeksforgeeks.org/arrays-sort-in-java-with-examples/

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

   Like      Discuss      Correct / Improve     array  sorting     Deloitte  Match  Ebates  Google  Zento  Zillow  UXP Systems  HCL Technologies  Infosys  IDEMIA  Optym  Groupon  Tata Consultancy (TCS)  Arbeiten bei Zeus  Accenture  Accenture India      basic        frequent




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

X Close this

Help Us Improve.
Please share your
interview experience.

Company Name:   


Questions Asked: