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Q1. Explain OOPs

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Explain OOPs Principles

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Explain OOPs Concepts

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Explain OOPs features

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Tell me something about OOPs

Core Java

^{2017-06-13 08:25:45}

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 protected
4. Polymorphism for flexibility and interfacing

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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 ?

Almost sure to be asked in every company using any Dependency Injection framework ( Spring, Guice etc )

Q2. What is Dependency Injection or IOC ( Inversion of Control ) ?

Design

Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.

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Related Questions

Name few Dependency Injection frameworks ?

What are the benefits of Dependency Injection or IOC ?

What are different types of dependency injections ?

What are the various Auto Wiring types in Spring ?

What is the difference betweeen @Inject and @Autowired ?

Which of the following Java features facilitates Dependency Injection - Inheritance or Composition ?

What are the different ways in which dependency injection can be done using Spring Framework ?

Difference between constructor and setter injection ?

Which of the OOP's features facilitate dependency injection ?

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