Why do we need to use protected access modifier instead of private?

Private members and attributes are completely hidden from outside classes as well as from subclasses. Protected access hides the class’s methods and attributes from classes that exist outside of the class’s package. This means that classes within the same package can access protected methods and attributes.

What is the difference between private and protected access specifier in java?

The private modifier specifies that the member can only be accessed in its own class. The protected modifier specifies that the member can only be accessed within its own package (as with package-private) and, in addition, by a subclass of its class in another package.

Why a class Cannot be private or protected in Java?

Since there is no way to restrict this class being subclassed by only few classes (we cannot restrict class being inherited by only few classes out of all the available classes in a package/outside of a package), there is no use of protected access specifiers for top level classes. Hence it is not allowed.

What is the difference between private and protected access specifier?

The difference is who can access those functions. Private = only members of the same class can access the function. Protected = Same as private but derived classes can also access.

Why do we use protected in Java?

Protecting a constructor prevents the users from creating the instance of the class, outside the package. During overriding, when a variable or method is protected, it can be overridden to other subclass using either a public or protected modifier only.

What is the difference between protected and default access modifier?

The protected specifier allows access by all subclasses of the class in question, whatever package they reside in, as well as to other code in the same package. The default specifier allows access by other code in the same package, but not by code that is in subclasses residing in different packages.

Why protected is used in Java?

What are the differences between a public method and a protected one in Java?

The difference between public and protected is that public can be accessed from outside class but protected cannot be accessed from outside class. In the example above, we created a protected method inside the Addition class.

Can we inherit protected class in Java?

The protected access modifier is accessible within the package. However, it can also accessible outside the package but through inheritance only. We can’t assign protected to outer class and interface.

Can Java class be protected?

No, we cannot declare a top-level class as private or protected. It can be either public or default (no modifier).

Why do we use protected in C++?

The protected keyword specifies access to class members in the member-list up to the next access specifier ( public or private ) or the end of the class definition. Class members declared as protected can be used only by the following: Member functions of the class that originally declared these members.

What is the main difference between protected and private data members in a class?

Private members are accessible within the same class in which they are declared. Protected members are accessible within the same class and within the derived/sub/child class. Private members can also be accessed through the friend function. Protected members cannot be accessed through the friend function.

Can We declare main() method as private or protected in Java?

Can we declare main () method as private or protected or with no access modifier in java? Java provides various access specifiers namely private, public and protected etc… The Private modifier restricts the access of members from outside the class. A class and interface cannot be public.

What are the different types of access specifiers in Java?

Java provides various access specifiers namely private, public and protected etc… The Private modifier restricts the access of members from outside the class. A class and interface cannot be public. The Public access modifier can be associated with class, method, constructor, interface, etc. public can be accessed from any other class.

Why Protected Access specifiers are not allowed for top level classes?

Since there is no way to restrict this class being subclassed by only few classes (we cannot restrict class being inherited by only few classes out of all the available classes in a package/outside of a package), there is no use of protected access specifiers for top level classes. Hence it is not allowed.

Why don’t we have a protected class member in Java?

Because it makes no sense. Protected class member (method or variable) is just like package-private (default visibility), except that it also can be accessed from subclasses. Since there’s no such concept as ‘subpackage’ or ‘package-inheritance’ in Java, declaring class protected or package-private would be the same thing.