Core java - Interview Questions and Answers for 'Bharti airtel' | Search Java Interview Question -

Search Interview Questions

 More than 3000 questions in repository.
 There are more than 900 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


Core java - Interview Questions and Answers for 'Bharti airtel' - 3 question(s) found - Order By Newest

Frequently asked at Manhattan Associates ( Based on 2 feedback )
  Q1. What is a Lambda Expression ? What's its use ?Core Java
Ans. Its an anonymous method without any declaration.

Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code.

It promotes Developer productivity, Better Readable and Reliable code.

  Sample Code for lambda

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

   Like         Discuss         Correct / Improve     java   java8   lambda expression   architecture     Asked in 58 Companies      expert        frequent

Try 1 Question(s) Test

Related Questions

  Difference between final and effectively final ? Why is effectively final even required ?
  Difference between Predicate, Supplier and Consumer ?
 What are the problems one could face while working with serverless technologies like AWS Lambda ?
 How does AWS Lambda handle failure during event processing?
 What would you do if you see an error thrown by a lambda function as "Access Denied" while doing something with S3 ?
 What are the advantages and disadvantages of using Lambda over EC2 ?
 What are the different trigger types in AWS Lambda ?
  What does the following lambda expression means ?
  Difference between DoubleSummaryStatistics , IntSummaryStatistics and LongSummaryStatistics ?

Basic and Very Frequently asked.
  Q2. 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     Asked in 107 Companies      Basic        frequent

Try 2 Question(s) Test

Related Questions

  What are points to consider in terms of access modifier when we are overriding any method?
 If everything is an object , Cant we declare every object as

Object obj = new String();
  Shouldn't we make a class with all static members is its just expected to be executed as a standalone program with just one thread. Moreover Lets assume that there is no runtime Polymorphism required and there is no need for serialization ?
  Is this Polymorphism ?

Map<String, List<String>> inventoryManagerCountMap = new HashMap<String, ArrayList<String>>();
  When are static and instance methods resolved ? During compile time or Runtime ?
  Which of the following is not the difference between Singleton and Static class ( Class with static members only ) ?
 Which of the following do you think is the primary reason you would never use a static class even the application doesn't need multiple requests or threads ?

a. Serialization
b. Runtime Polymorphism
c. Lazy Loading
d. Memory
 How is static and dynamic polymorphism achieved in Java ?
 Why do we need polymorphism in Java ?

 Q3. How can be restrict creation of more than n objects in Java ?Core Java2017-01-19 10:38:18

Ans. We can follow the same design which we follow in singleton Classes. We can have a static counter that will keep the count of number of objects already created, We can keep the constructor private and being called through the static method. We can keep incrementing the counter before calling the constructor and put a check to call only if it's lesser than n.

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

   Like         Discuss         Correct / Improve          Asked in 1 Companies

Related Questions

  Difference between == and .equals() ?
  Why is String immutable in Java ?
  Explain the scenerios to choose between String , StringBuilder and StringBuffer ?


What is the difference between String , StringBuilder and StringBuffer ?
  What are the difference between composition and inheritance in Java?
  Does garbage collection guarantee that a program will not run out of memory?
  What are different ways to create String Object? Explain.
  Why Char array is preferred over String for storing password?
  Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?
 What is the difference between declaration, instantiation and initialization ?
 Explain OOPs


Explain OOPs Principles


Explain OOPs Concepts


Explain OOPs features


Tell me something about OOPs

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: