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Interview Questions and Answers for 'PayTM' - 2 question(s) found - Order By Newest | ||||
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Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features 1. Inheritance for Code Reuse 2. Abstraction for modularity, maintenance and agility 3. Encapsulation for security and protection 4. Polymorphism for flexibility and interfacing | ||||
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Like Discuss Correct / Improve  oops  oops features Asked in 260 Companies basic   frequent | ||||
Related Questions | ||||
Can you give a real world example of Encapsulation and Abstraction ? | ||||
Which of the following Java feature promotes access protection or Hiding ? a. Inheritance b. Encapsulation c. Abstraction d. Composition | ||||
Define encapsulation in Java ? | ||||
Give an example of how Object Oriented Programming Concepts can be implemented. | ||||
Which of the OOP's features facilitate dependency injection ? | ||||
Which of the OOP's feature - encapsulation or abstraction - is more important ? | ||||
Which of the polymorphism type - static or runtime - is more important ? | ||||
Which of the OOP's feature is most important ? | ||||
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Ans. ConcurrentHashMap is a hashMap that allows concurrent modifications from multiple threads as there can be multiple locks on the same hashmap. | ||||
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Like Discuss Correct / Improve  java   collections   hashmap   map   concurrenthashmap   concurrenthashmap  concurrency   general electric   ge Asked in 32 Companies   rare | ||||
Related Questions | ||||
What is ConcurrentModificationException ? | ||||
What is a BlockingQueue? | ||||
What is concurrent interface ? | ||||
What is ConcurrentLinkedDeque ? | ||||
What is CopyOnWriteArrayList ? | ||||
What are the advantages and disadvantages of CopyOnWriteArrayList ? | ||||
Name few Concurrent Collection Classes ? | ||||
Difference between concurrentHashMap and HashTable ? | ||||
isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ? | ||||