What is best practice for object oriented programming?

Question

Please only with example. . .

Answer 1

I come from Java, I think "Constructor" is very important for you, before you practice OOP.

Answer 2

https://www.codeproject.com/Articles/22769/Introduction-to-Object-Oriented-Programming-Concep

Answer 3

https://www.javatpoint.com/java-oops-concepts

Answer 4

Thank you for your answers, but consider a conditions that you do teaching a language programming. In OOP topic, what is your best way for OOP understanding? In other words, what are the exercises your students to better understand?
What is your offer for deep OOP learnning?

Answer 5

The best practice, is to try and code using OOP.