Should I use protected Java?

Should you ever use protected member variables? Depends on how picky you are about hiding state. If you don’t want any leaking of internal state, then declaring all your member variables private is the way to go. If you don’t really care that subclasses can access internal state, then protected is good enough.

What is the point of protected 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. Outer class and interface cannot be protected.

How protected keyword is useful?

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.

Why we use protected modifiers in Java?

3) Protected

The protected access modifier can be applied on the data member, method and constructor. It can’t be applied on the class. It provides more accessibility than the default modifer. In this example, we have created the two packages pack and mypack.

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When should a method be protected?

The best time to create a method under the protected heading is when you want to compare and/or transfer data between objects of the same class, but you don’t want that information to be made public.

Can we override private method in Java?

No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.

Can we override protected method in Java?

Yes, the protected method of a superclass can be overridden by a subclass. If the superclass method is protected, the subclass overridden method can have protected or public (but not default or private) which means the subclass overridden method can not have a weaker access specifier.

What is difference between protected and public?

Difference between Public and Protected

The data members and member functions declared public can be accessed by other classes too. The class member declared as Protected are inaccessible outside the class but they can be accessed by any subclass(derived class) of that class.

Can you inherit a final class?

The main purpose of using a class being declared as final is to prevent the class from being subclassed. If a class is marked as final then no class can inherit any feature from the final class. You cannot extend a final class.

What is protected in OOP?

Protected means that a class and its subclasses have access to the variable, but not any other classes, they need to use a getter/setter to do anything with the variable. A private means that only that class has direct access to the variable, everything else needs a method/function to access or change that data.

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What is the difference between private and protected 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.

Who can access protected in Java?

2. The protected Keyword. While elements declared as private can be accessed only by the class in which they’re declared, the protected keyword allows access from sub-classes and members of the same package.

What is difference between default and protected in Java?

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.