What is OOP?

OOP is object-oriented programming and a computer programming architecture. Its essence is the abstract thinking process and object-oriented method embodied by establishing models, which are used to reflect the characteristics of real world things.

Object-oriented programming takes objects as the core. This method thinks that a program is composed of a series of objects. Class is an abstraction of the real world, including data representing static attributes and operations on data, and objects are instantiations of classes. Objects communicate with each other through messaging to simulate the connection between different entities in the real world. In object-oriented programming, the object is the basic module of the program.

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Advantages of object-oriented programming:

1, the concept of data abstraction can change the internal implementation while keeping the external interface unchanged, thus reducing or even avoiding interference with the outside world;

2. Through inheritance, redundant codes are greatly reduced, and existing codes can be easily expanded, thus improving coding efficiency, reducing error probability and reducing software maintenance difficulty;

3. By combining object-oriented analysis with object-oriented design, the objects in the problem domain can be directly mapped into the program, which reduces the conversion process of intermediate links in the software development process;

4. By distinguishing and dividing the objects, the software system can be divided into several relatively independent parts, which is more convenient to control the software complexity to some extent;

5. Object-centered design can help developers to grasp the problem from both static (attributes) and dynamic (methods), so as to better realize the system.

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