Why we need polymorphism & encapsulation in Java ?

Answer 1

El Polimorfismo es uno de los 4 pilares de la programación orientada a objetos junto con la Abstracción, Encapsulación y Herencia. se utiliza en la POO para referirse a la propiedad por la que es posible enviar mensajes sintácticamente iguales a objetos de tipos distintos"

Answer 2

It's too big an answer to be discussed in detail so kindly read this or any other online reference for better understanding.

https://www.nerd.vision/post/polymorphism-encapsulation-data-abstraction-and-inheritance-in-object-oriented-programming

Come back if you do not understand something specific.

Answer 3

I don't understand in technically can you elaborate in simple language with real life example ???

Answer 4

It will need some reading but you will slowly understand it. I hope someone will explain it in detail if they find time.

https://www.sololearn.com/discuss/860433/?ref=app
https://www.sololearn.com/discuss/878557/?ref=app