what is encapsulation in java

What is encapsulation?

In object-oriented programming methods, encapsulation refers to a method of partially packaging and hiding the implementation details of an abstract functional interface. Encapsulation can be thought of as a protective barrier that prevents the code and data of the class from being randomly accessed by code defined by the external class. Access to the code and data of this class must be controlled through strict interfaces.

Main functions:

The main function of encapsulation is that we can modify our own implementation code without modifying the program fragments that call our code. Proper encapsulation can make the program code easier to understand and maintain, and also enhances the security of the program code.

Advantages of encapsulation:

1. Good encapsulation can reduce coupling.

2. The structure inside the class can be modified freely.

3. Member variables can be controlled more precisely.

4. Hide information and implement details.

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