Where understand java that which class is original class?

Question

hi my friends

Where understand java that which class is original and starter class?

Answer 1

Find the class which has main method. Usually, it has public access modifier. That is the class which allows the code to be executed

Answer 2

I would say because of the main method public static void main(String[] args)

Answer 3

main method is always? :
oublic ststic void main(String[] args)