Whats the point of limiting accessibility using Private and Protected?

Question

Is this to prevent hackers or something? I understand how it works but not why its used.

Answer 1

So from my understanding when you work with someone, but have different assignments, your code can be messed up by that person, without them touching your class directly?

Answer 2

Hiding Data from who? Only you have access to your code right

Answer 3

https://www.java-made-easy.com/java-access-modifiers.html

Answer 4

Yes.Java has some principles called OOP(object oriented programming).one of the OOP concepts is Encapsulation (hiding code from misuse or limiting scope of a piece of code).