38 - Classes and Objects in Java (Part 2) (Hindi/Urdu)

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Classes and Objects are a core and integral part of OOP (Object Oriented Programming) paradigm. Basically, everything we write in our code is represented by our class.

The class is a generalized idea in which we lay out our plan or blueprint which enacts as a base for our idea.
The Class is a logical entity.

To implement a class in real life scenario we have to use objects which are also known as the instance of a class.
The Object is a physical entity.

In our class, we declare some variables or fields which are known as Instance Variables.
And the definition of these instance variables are is provided by the used of reference variables which we create in object instantiation process. And we also use dot (.) operator with it.

Local Variables are those which we define and declare inside a method and blocks. Their scope is limited to their respective block & methods.

Garbage collection process is performed by JVM to remove any objects which don't have any reference variable pointing towards them.

In JVM (Java Virtual Machine) architecture, we have two types of memory which are assigned to provide core memory for our Java code.

1) Heap Memory - Used to store instance variables & objects.
2) Stack Memory - Used to store local variables & methods.

Video link to Classes & Objects concepts :
https://youtu.be/6GJU6wcyE2c

Video link to OOP concepts (First) :
https://youtu.be/Qkjtx8m0d_k

Video link to OOP concepts (Second) : https://youtu.be/Xya_Uzk2vvw

Thanks for watching and stay tuned.

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