What Is the Difference Between Classes and Objects?

Classes and objects from the essential part of Object-oriented programming, where a class can be considered as a construct which encapsulates a group of variables and methods; whereas, an object acts as member or instance of that class.

Lets us differentiate between these two:

A class is a blueprint from which you can create the instance, i.e., objects.An object is the instance of the class, which helps programmers to use variables and methods from inside the class.
A class is used to bind data as well as methods together as a single unit.object acts as a variable of the class.
Classes have logical existence.Objects have a physical existence.
A class doesn't take any memory spaces when a programmer creates one.An object takes memory when a programmer creates one.
The class has to be declared only once.Objects can be declared several times depending on the requirement.

Here are few other related articles for you to read: