Core java - Interview Questions and Answers for 'Airbnb' | Search Java Interview Question - javasearch.buggybread.com

Javasearch.buggybread.com

Search Interview Questions

3193 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.

Submit Question

Airbnb

Core java - Interview Questions and Answers for 'Airbnb' - 1 question(s) found - Order By Newest

Q1. Write a method to check if input String is Palindrome?

^{Admin
info@buggybread.com}

Ans. private static boolean isPalindrome(String str) {

if (str == null)
return false;

StringBuilder strBuilder = new StringBuilder(str);

strBuilder.reverse();

return strBuilder.toString().equals(str);

}

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

_{Like Discuss Correct / Improve java string stringbuilder stringbuilder string class code palindrome HCL Technologies Hootsuite ebay Mobile Apps Company TripAdvisor Wallet Hub Groupon OpenText Airbnb Vantiv Minted LLC Boston Analytics mint.com Arista Networks Dealer.com the Zappos Family Sony PlayStation Taser Wolters Kluwer Wize Commerce Hitachi Consulting Quickr SmartBrief Liaison International Monitise Exilant Technologies Enova Wayfair Amadeus MakeMyTrip Naggaro Vudu OnDeck Capital HighRadius
thePlatform Trimax IT Infrastructure & Services Insight Global Basic frequent}

Related Questions

How does volatile affect code optimization by compiler?

Which keyword is used to provide explicit access of a code block to single thread ?

a. Transient
b. Final
c. Explicit
d. Synchronized

What is the difference between the following two code lines ?

1. new OuterClass().new InnerClass();

2. new OuterClass.InnerClass();

Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ?

How can we make sure that a code segment gets executed even in case of uncatched exceptions ?

Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?

What is the difference between these two approaches of creating singleton Class ?

//Double Checked Locking Code
public static Singleton createInstance() {
   if(singleton == null){
      synchronized(Singleton.class) {
         if(singleton == null) {
            singleton = new Singleton();
         }
      }
   }
   return singleton;
}

//Single checked locking code
public static Singleton createInstance() {
   synchronized(Singleton.class) {
      if(singleton == null) {
         singleton = new Singleton();
      }
   }
   return singleton;
}

What is the difference between following two segments of code

Code 1

int x = 4 * 3;
int y = x * 5;

Code 2

int y = 4 * 3 * 5;

If arrays cannot be resized , Why is this code valid

String[] strArray = new String[2];
strArray = new String[5];