What if I create a private variable inside the main class, would that mean it'll be available in other classes? What do private variables even do?

Answer 1

Private variables are only accessible from the same class/object and not by other classes.

Answer 2

The private access modifier is accessible only within class.

Simple example of private access modifier

let'say we have created two classes A and Simple. A class contains private data member and private method. We are accessing these private members from outside the class, so there is compile time error.
Note : we use private only with class members i.e. with instance variables and instance methods and not with main outer class. This is one of the Java beans convention followed by developers

Answer 3

new answer