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| Interview Questions and Answers for 'Verizon' - 3 question(s) found - Order By Rating | ||||
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| Ans. Every fresh session having its own cache memory, Caching is a mechanism for storing the loaded objects into cache memory. The advantage of cache mechanism is, whenever again we want to load the same object from the database then instead of hitting the database once again, it loads from the local cache memory only, so that the no. of round trips between an application and a database server got decreased. It means caching mechanism increases the performance of the application. In hibernate we have two levels of caching First Level Cache [ or ] Session Cache Second Level Cache [ or ] Session Factory Cache [ or ] JVM Level Cache | ||||
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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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Discuss Correct / Improve oops oops features Asked in 260 Companies  basic  frequent | ||||
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| Can you give a real world example of Encapsulation and Abstraction ? | ||||
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| Which of the OOP's feature is most important ? | ||||
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 Very Frequently asked. Usually asked along with String Class related questions. | ||||
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| Ans. Class using which only immutable (objects that cannot be changed after initialization) objects can be created. | ||||
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| Discuss Correct / Improve java oops immutable immutability immutable immutability class string class basic interview question Asked in 18 Companies Basic frequent | ||||
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| Related Questions | ||||
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