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Interview Questions and Answers for 'Booking.com' - 7 question(s) found - Order By Newest

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q1. Difference between TreeMap and HashMap ?Core Java
Anonymous
Ans. They are different the way their elements are stored in memory. TreeMap stores the Keys in order whereas HashMap stores the key value pairs randomly.

  Sample Code for treemap

  Sample Code for hashmap

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

   Like         Discuss         Correct / Improve     java   collections   map   treemap   hashmap     Asked in 31 Companies      basic        frequent
Try 1 Question(s) Test

Frequently asked question for intermediate developers.
  Q2. What is Volatile keyword used for ?Core Java
Anonymous
Ans. Volatile is a declaration that a variable can be accessed by multiple threads and hence shouldnt be cached.

  Sample Code for volatile

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

   Like         Discuss         Correct / Improve     java   oops   synchronization   volatile   java keywords     Asked in 42 Companies      intermediate        frequent
Try 1 Question(s) Test

  Q3. Write a Program to check if 2 strings are Anagrams ?Core Java2016-11-30 20:52:37

Ans. public void checkIfAnagram(String str1,String str2){
boolean anagram = true;
for(char c:str1.toCharArray()){
if(!str2.contains(String.valueOf(c))){
System.out.println("Strings are Anagrams");
anagram = false;
}

if(anagram == true){
System.out.println("Strings are not Anagrams");
}
}
}

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   Like         Discuss         Correct / Improve      check if 2 strings are Anagrams     Asked in 30 Companies      basic        frequent

 Q4. What is ConcurrentModificationException ?Core Java
Admin
info@buggybread.com
Ans. This is the exception that is thrown when we try to modify the non concurrent collection class while iterating through it.

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   Like         Discuss         Correct / Improve     java   collections   concurrentmodificationexception   exception  concurrency     Asked in 14 Companies      intermediate

 Q5. Write a method / program that will determine if the parenthesis are balanced in a given string.Core Java2017-02-03 13:13:55

 This question was recently asked at 'Jetbro,Booking.com,Cloudera,UrjaNet,Wissen Infotech,ThoughtWorks,Capital One,Experian,Remaxys,MongoDB,One.com,Lime Brokerage,Netcracker Technology,Ooyala'.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     string  code  coding     Asked in 14 Companies

 Q6. How would you do an object oriented design on animals in a zoo ?Design2017-02-03 13:14:47

 This question was recently asked at 'Booking.com,InterContinental Hotels,Caissa,Workday'.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          Asked in 4 Companies

 Q7. Pascal Triangle Program2019-01-08 15:54:25

 This question was recently asked at 'Xalted Information Systems,Amdocs,Booking.com,Facebook,Yelp,Concerto Software,Dassault Systemes,ING Group'.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          Asked in 8 Companies


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