Quick Answer: What Is Difference Between Protected And Private?

Is protected package private?

protected : accessible by the classes of the same package and the subclasses residing in any package.

default (no modifier specified): accessible by the classes of the same package.

private : accessible within the same class only..

Why we use public private and protected?

If the class member declared as public then it can be accessed everywhere. If the class members declared as protected then it can be accessed only within the class itself and by inheriting and parent classes. If the class members declared as private then it may only be accessed by the class that defines the member.

Can we declare a member function private?

A private member variable or function cannot be accessed, or even viewed from outside the class. Only the class and friend functions can access private members.

What is public protected and private?

Broadly speaking, public means everyone is allowed to access, private means that only members of the same class are allowed to access, and protected means that members of subclasses are also allowed. However, each language adds its own things to this. For example, C++ allows you to inherit non-publicly.

Who can access class member with private modifier?

1) Private The private access modifier is accessible only within the class. In this example, 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 a compile-time error.

What is the main difference between a public method and a private method?

So what’s the difference between a public and private function? A private function can only be used inside of it’s parent function or module. A public function can be used inside or outside of it. Public functions can call private functions inside them, however, since they typically share the same scope.

How do I access a protected method outside the package?

A protected member or constructor of an object may be accessed from outside the package in which it is declared only by code that is responsible for the implementation of that object. new Base(). display(); It creates a Base object, and then trys to call the display() on it.

What is protected member?

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: … Direct privately derived classes that also have private access to protected members.

Is A or inheritance?

In object-oriented programming, the concept of IS-A is a totally based on Inheritance, which can be of two types Class Inheritance or Interface Inheritance. … Wherever you see an extends keyword or implements keyword in a class declaration, then this class is said to have IS-A relationship.

Can protected members be inherited?

Its only difference occurs in fact with inheritance: When a class inherits another one, the members of the derived class can access the protected members inherited from the base class, but not its private members. … With protected , all public members of the base class are inherited as protected in the derived class.

What is private protected?

The private protected keyword combination is a member access modifier. A private protected member is accessible by types derived from the containing class, but only within its containing assembly. … The private protected access modifier is valid in C# version 7.2 and later.

How can you make private members inheritable?

Explanation: Private access specifier is the most secure access mode. It doesn’t allow members to be inherited. Even Private inheritance can only inherit protected and public members. Explanation: If the access mode is not specified during inheritance, the class is inherited privately by default.

How can we access protected and private members of a class?

Protected members can only be accessed by descendants of the class, and by code in the same module. Private members can only be accessed by the class they’re declared in, and by code in the same module.

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

private – only available to be accessed within the class that defines them. protected – accessible in the class that defines them and in other classes which inherit from that class.

What are public/private and protected in C++?

In C++, there are three access specifiers: public – members are accessible from outside the class. private – members cannot be accessed (or viewed) from outside the class. protected – members cannot be accessed from outside the class, however, they can be accessed in inherited classes.

How do you implement inheritance?

In Java inheritance is declared using the extends keyword. You declare that one class extends another class by using the extends keyword in the class definition. Here is Java inheritance example using the extends keyword: In java, it is possible to reference a subclass as an instance of one of its super-classes.

What is difference between public and private inheritance?

A public member is accessible from anywhere outside the class but within a program. You can set and get the value of public variables without any member. A private member variable or function cannot be accessed, or even viewed from outside the class.

Should I use protected or private?

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.