Difference Between Class and Object ?

What is a Class?

A class is a blueprint or template used to create objects. It defines the data (fields) and behavior (methods) that the objects will have. A class itself does not occupy memory until an object is created.

C# Example of a Class:

class Car
{
    public string Color;
    public int Speed;

    public void Drive()
    {
        Console.WriteLine("The car is driving.");
    }
}

    

What is an Object?

An object is an instance of a class. It is the real, usable entity created from the class. An object occupies memory and stores actual values for the fields defined in the class.

C# Example of an Object:

Car myCar = new Car();
myCar.Color = "Red";
myCar.Speed = 80;
myCar.Drive();

    

Comparison Table

Feature	Class	Object
Definition	Blueprint or template	Instance of a class
Memory	Does not occupy memory	Occupies memory
Purpose	Defines structure and behavior	Holds real data and performs actions
Example	Car	myCar, car1, car2
Type	Logical entity	Physical entity (in memory)

Simple Analogy

A class is like a recipe for a cake.
An object is the actual cake made using that recipe.

One recipe can make many cakes, each different in flavor or decoration—just like many objects can be created from one class.