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Definition of Encapsulation:

Encapsulation is a key concept in Object Oriented Programming paradigm which combines the data(properties) and functions, related to the same object, together in a single unit.

Features

Data hiding is one of the important features of encapsulation.
We can make our data secure by making them read-only or write-only fields.
Properties and Functions of the related object are combined together.

Example:

Let’s take the example of XYZ Company. A company has many employees. Each and every employee has a name, different employee id, salary, etc. Suppose if you want to see the salary of an employee, for that you have to create a function or you want to know the name of the employee of a particular employee id, for that also you have to create a function.

The name of the employee or his/her salary details are confidential things and you want to keep them secure. Someone cannot change the details of the employee. This is Data Hiding.

Code:

Suppose you want to set the name and salary of an employee by passing id, name, and salary using encapsulation.