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Object-Oriented Programming: How to Make Complex Tasks Simple

Thus, objects remain autonomous, changes in one of them do not entail changes in the other. The main thing is to think over the rules of interaction between program components. Most modern programming languages ​​use such a paradigm, which makes the process of developing and supporting software products faster and more convenient.

Main characteristics with learning the basic principles of object-oriented programming.

Encapsulation.
Inheritance.
Polymorphism.
Abstraction.
Each of these properties is a necessary condition for the effective implementation of OOP.

Object-Oriented Programming: How to Make Complex Tasks Simple
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Encapsulation
Each object is a separate entity with specific properties. This entity responds to signals from other objects with a specific set of functions based on the available data. The data itself, methods, and implementation details are hidden from the program. This phenomenon is called encapsulation, a mechanism for controlling access to information.

To follow encapsulation, in programming there is a possibility of code access control. There are 3 modifiers:

Public – provides access from any class
Protected – access is allowed only from the parent class and descendant classes
Private – no access from all classes except this one
Question: Is it possible to implement several types of access in one program?