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| Core java - Interview Questions and Answers for 'Veritas' - 5 question(s) found - Order By Newest | ||||
 Frequently asked in Infosys India | ||||
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| Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference. | ||||
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 Discuss Correct / Improve  java oops string string class string pool heap memory  Asked in 31 Companies  intermediate  frequent | ||||
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| Frequently asked in high end product companies. Frequently asked in Deloitte. | ||||
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| Ans. https://medium.com/javarevisited/internal-working-of-hashmap-in-java-97aeac3c7beb#:~:text=HashMap%20internally%20uses%20HashTable%20implementation,the%20entries%20into%20the%20map. | ||||
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| Discuss Correct / Improve hashmap collections hashmap internal implementation Asked in 20 Companies expert frequent | ||||
| Very frequently asked. Usually asked with questions related to String. Frequently asked at CTS / Cognizant | ||||
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| Ans. Object that can't be changed after instantiation. | ||||
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| Discuss Correct / Improve java oops immutable immutability Asked in 27 Companies basic frequent | ||||
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| Ans. Postfix operators i.e () [] . is at the highest precedence. | ||||
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| Discuss Correct / Improve java operators operator precedence Asked in 2 Companies | ||||
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| Ans. Abstraction is provided in Java by following ways - Coding to the ( Interfaces / Abstract Classes ) or contracts By Encapsulating details within classes and exposing the minimal Door ( few public methods ) | ||||
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| Discuss Correct / Improve java oops concepts abstraction interfaces abstract class encapsulation object oriented programming (oops) oops concepts Asked in 3 Companies basic frequent | ||||
When String literals are compared using ==, they always returns true if the string values are same because .. 
