Contrary to how it might sound, protected is slightly less restrictive than the default level of accessibility. In addition to the default access afforded classes in the same package, protected members are visible to subclasses of the class, even if they are defined in a different package.
Is protected more restrictive than private?
Java Access Modifiers – protected keyword
If class member is “protected” then it will be accessible only to the classes in the same package and to the subclasses. This modifier is less restricted from private but more restricted from public access.
What is difference between protected and default?
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.
Which is least restrictive open or public >?
Java public access modifier:
When applied to a class, the class is accessible from any classes regardless of packages. This is the least restrictive access modifier which means the widest range of accessibility, or visibility.
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 not type of inheritance?
What is not type of inheritance? Explanation: Inheritance is way of acquiring attributes and methods of parent class. Java supports hierarchical inheritance directly. 2.
Can constructor be inherited?
Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.
Can constructor be static?
Java constructor can not be static
One of the important property of java constructor is that it can not be static. We know static keyword belongs to a class rather than the object of a class. A constructor is called when an object of a class is created, so no use of the static constructor.
Is default a protected?
The default modifier is accessible only within package. It cannot be accessed from outside the package. It provides more accessibility than private. But, it is more restrictive than protected, and public.
Is protected package 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.
What is the accessibility of anything protected?
First and important difference is the accessibility i.e. anything public is accessible to anywhere , anything private is only accessible in the class they are declared , anything protected is accessible outside the package but only to child classes and default is accessible only inside the package.
How do you prevent a class from being extended?
You can prevent a class from being subclassed by using the final keyword in the class’s declaration. Similarly, you can prevent a method from being overridden by subclasses by declaring it as a final method. An abstract class can only be subclassed; it cannot be instantiated.
Is there any difference between public protection and private protection?
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.
Which is the default modifier for a function Open final?
The final modifier mark classes and methods as not allowed to be overridden. In Kotlin this is the default. This decision was made to avoid fragile base class problem. It happens when a small change in base classes (super classes) make subclasses to malfunction.