أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
This is a common question for all programmers. This is the key startup for the code.
used for controlling the access of a class, methods ,varaibles or constructor .
It could be private which means only visible to the class
or public which can be accessed everywhere
or protected which can be accessed by any subclass in any package or in any class within the package of the protected class
