If a class member is “protected,” only classes in the same package and subclasses will have access to it. This modifier is more restricted for public access but less so for private access. This keyword is typically used to ensure that the class variables are only accessible to the subclasses.
What is a protected member of a class?
In that they cannot be accessed from outside the class, protected members of a class are similar to private members. However, whereas private members cannot be accessed by derived classes or child classes, they can.
What is mean by class member protected in Java?
The protected modifier designates that the member can only be accessed by a subclass of its class in another package as well as within its own package (like with package-private). The access to members that each modifier permits is displayed in the following table.
What does it mean when a data member is declared as protected in a class definition?
Other classes may also access the data members and member functions that have been declared public. The class members marked as Protected are inaccessible to users outside of the class, but any subclass (derived class) of that class may access them.
What is protected member of a class in OOP?
A variable that is protected can only be accessed by a class and its subclasses, and they must use a getter/setter to perform any operations on the variable.
How are protected members of a base class Mcq?
The distinction between protected and private access specifiers in inheritance is that a protected member is inheritable and accessible in derived classes.
How can a protected member be accessed in Java Mcq?
How can one access a protected modifier? The protected access modifier can be accessed both inside and outside of a package, but only via inheritance. The constructor, method, and data member are all compatible with the protected access modifier. It isn’t applicable in class.
Why can a class not be defined as protected?
Class is defined as protected, so it cannot be extended from a package outside of its own (not visible). And since it will then become the default access, which is permitted, if it cannot be extended, maintaining it as protected is pointless.
What is a protected method?
Similar to a private method, a protected method can only be called from within the implementation of a class or one of its subclasses. It differs from a private method in that it is not limited to implicit invocation on self and may be explicitly invoked on any instance of the class.
Which of the following is false about protected class members?
Which of the following statements regarding members of protected classes is false? Justification: Name mangling cannot be used to access members of protected classes.
When a protected member is inherited in public mode it becomes?
In the derived class, a protected member that is inherited in public mode remains protected, while a protected member inherited in private mode becomes private. If a public member is inherited in public mode, it remains public in the derived class; if it is inherited in private mode, it remains private.
What is a protected variable in C++?
Similar to a private member, a protected member variable or function has the added advantage of being accessible in derived classes, which are child classes. In the following chapter, you will study derived classes and inheritance.
What are the object oriented visibility Mcq?
Which object-oriented visibility are there? Clarification: Private, Packaged, Protected, and Public are the different types of object-oriented visibility.
Which of the following class Cannot be a base class Mcq?
The term “enclosing class” refers to a class that contains multiple nested classes. Considering that there is no inheritance involved, it cannot be referred to as a parent or base class.
When inheritance is protected private members of base class are in the derived class Mcq?
1. In C++, the private methods from the base class are _________ in the derived class when the inheritance is private. The private methods in the base class are unavailable to the derived class when the inheritance is private (in C++). 2.
Which of the following are true about protected access specifier?
Which of the following statements regarding the protected access modifier is true? A – Any class can access variables, methods, and constructors that have been declared protected.
How do you call a protected method in Java?
Example 2
- a class A
- Try to access the protected variable outside the class within the package, says the protected String message;
- }
- ProtectedExample2 is a public class.
- (String[] args) public static void main
- new A() = A;
- System.out.println(a.msg);
- }
Can we have protected class in Java?
No, a top-level class cannot be made private or protected. It may be default or public (no modifier).
When should I use protected in Java?
When you need to restrict access to a package’s or a subclass’s code only, use the protected modifier.
Can protected methods be overridden by?
Yes, a subclass may override a superclass’s protected method. The subclass overridden method cannot have a weaker access specifier if the superclass method is protected. Instead, it can have protected or public access (but not default or private).
Can a class be public/private protected and default?
Everything that is public is accessible to anyone, everything that is private is only accessible within the class in which it was declared, everything that is protected is accessible outside the package, but only to child classes, and everything that is default is accessible only inside the package.
What is protected keyword?
The member access modifier is the protected word. Protected access is the topic of this page. The protected internal and private protected access modifiers both include the protected keyword. Within a class and by instances of derived classes, a protected member is accessible.
Which of the following access specifier is used as a default in a class definition Mcq?
Reason: A class definition uses the private access specifier by default.
Which statement is true with regard to the private and protected members of a class?
D. Private members of a subclass can inherit protected members from the parent class and become its members. Reason: A subclass cannot inherit the private members of a parent class.
Which of the following is used to make an abstract class Mcq?
Which of the following is a prerequisite for creating an Abstract class? Explanation for Question 6: The way to create an abstract class is to turn at least one member function into a pure virtual function.
What is correct about the static data member of a class Mcq?
What aspect of a class’ static data member is accurate? Only the static data members of a class may be accessed by a static member function. Each object in the class shares a static data member.
Can protected members be inherited?
The child classes inherit the protected members and have access to them just like their own members. However, we are unable to access these members using the parent class’s reference. Protected members can only be accessed using a child class reference.
What can be inherited by a derived class from a base class Mcq?
Which of the following does a derived class inherit from the base class? The class that inherits another class inherits all of the non-private data members and member functions. This is done to ensure that the security features are as flexible as possible.
What is protected access specifier?
Other classes and objects cannot access the member variables and functions of a protected access specifier. You can only access this kind of variable or function from a child class. When implementing inheritance, it becomes extremely important.
What is protected vs private?
Only code in the same class or struct may access a private type or member. Only code from the same class or a class descended from that class may access a protected type or member.
Are protected variables inherited in C++?
All of the base class’s public members are inherited as protected in the derived class when protected is used. On the other hand, if the most restrictive access level (private) is specified, all base class members inherit that access level.
What is class member function in C++?
Operators and functions that are designated as members of a class are known as member functions. Operators and functions declared with the friend specifier are not included in member functions. These are referred to as class friends.
Which of the following is not an attribute of object Mcq?
Which of the following does not qualify as an object’s property? Names are not an object’s property, as explained. Identity can take many different forms, such as address or object name, but name alone cannot be considered an object’s identity. The attributes of the objects specify the kinds of data that can be stored in them.
Which of the statements state the name compartment Mcq?
Which statement contains the name of the compartment? Reason: The state name compartment, which may not always be present, is the first compartment to contain the state name. 7.
Which of the following statements is most appropriate about the protected access?
What statement best sums up the protected access specifier? Explanation: Protected members are not visible to external objects or variables but are visible to its block and to the derived classes. 3.
How can a protected member be accessed in Java Mcq?
How can one access a protected modifier? The protected access modifier can be accessed both inside and outside of a package, but only via inheritance. The constructor, method, and data member are all compatible with the protected access modifier. It isn’t applicable in class.
Which of the following is false about protected class members?
Which of the following statements regarding members of protected classes is false? Justification: Name mangling cannot be used to access members of protected classes.
Which among the following feature is not in the general definition of oops Mcq?
Platform independence is a feature that does not fall under the OOPS concepts, as explained.
In which of the following is true when a derived class inherits a base class privately?
In private inheritance, the base class’s public and protected members are converted into private members of the derived class. This implies that the derived object’s public interface does not inherit the base class’s methods. The member functions of the derived class can, however, use them.
When a base class is privately inherited by derived class public members of the base class can only be accessed by?
I The dot operator can be used by a class’s own objects to access a public member. ii) Even though the base class’s private members are inherited, they never actually join the derived class. 10.
What does protected class mean in Java?
Protected in Java denotes that the member is accessible to all classes in the same package as well as subclasses, even if they are in different packages.
How many members are there in access specifier Mcq?
There are only three different types of access specifiers. Specifically, secure, private, and open. Depending on the members’ security needs, any one of these three options can be used. 2.
What is a protected method?
Similar to a private method, a protected method can only be called from within the implementation of a class or one of its subclasses. It differs from a private method in that it is not limited to implicit invocation on self and may be explicitly invoked on any instance of the class.
What is protected access specifier in Java?
protected: The keyword protected is used to specify the protected access modifier. The protected methods or data members can be accessed by subclasses in the same package or in other packages.
What is public/private and protected in Java?
Access to public members is possible from the same package’s child class. Private members are inaccessible from the same package’s child class. Access to protected members is possible from the same package’s child class. Access to package members is possible through the package’s child class.
When would you use a protected class?
Employment discrimination on the basis of national origin, age (40 or older), disability, race, color, religion, sex (including pregnancy, sexual orientation, or gender identity) and genetic information is prohibited for all parties involved, including job applicants, employees, and former employees (including family medical history).
Which of the following statement is true in Java Mcq?
2. Regarding Java, which statement is accurate? Java is known as a “Platform Independent Language” because it primarily adheres to the “compile once, run everywhere” tenet.
Can protected members be inherited in Java?
No matter what package a subclass is in, it inherits all of the public and protected members from its parent.