Visibility Modifiers
Discover how visibility modifiers in Kotlin control access to class members.
Introduction to visibility
When we design our classes, we prefer to expose as little as possible. If there is no reason for an element to be visible, we prefer to keep it hidden.
Visibility defines where an element can be used. If an element is not visible, it cannot be used.
This is why if there is no good reason to have a less restrictive visibility type, it is good practice to make the visibility of classes and elements as restrictive as possible. We do this using visibility modifiers.
Visibility modifiers for class members
For class members, these are the four visibility modifiers we can use:
public(default): Visible everywhere for anyone who can see the declaring class ...