Answer Posted / sanjay vishwakarma

Encapsulation:
Encapsulation is a process of binding the data members and
member functions into a single unit.
Example for encapsulation is class. A class can contain data
structures and methods.
Consider the following class
public class Aperture
{
public Aperture ()
{
}
protected double height;
protected double width;
protected double thickness;
public double get volume()
{
Double volume=height * width * thickness;
if (volume<0)
return 0;
return volume;
}
}
In this example we encapsulate some data such as height,
width, thickness and method Get Volume. Other methods or
objects can interact with this object through methods that
have public access modifier

Abstraction:
Abstraction is a process of hiding the implementation
details and displaying the essential features.
Example1: A Laptop consists of many things such as
processor, motherboard, RAM, keyboard, LCD screen, wireless
antenna, web camera, usb ports, battery, speakers etc. To
use it, you don't need to know how internally LCD screens,
keyboard, web camera, battery, wireless antenna, speaker’s
works. You just need to know how to operate the laptop by
switching it on. Think about if you would have to call to
the engineer who knows all internal details of the laptop
before operating it. This would have highly expensive as
well as not easy to use everywhere by everyone.
So here the Laptop is an object that is designed to hide its
complexity.

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1810

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