Protected access gives the subclass a chance to use the helper method or variable, while preventing a nonrelated class from trying to use it.
Why protected access specifier is used?
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: … Friends of the class that originally declared these members.
What is protected access specifier in java?
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. … The third column indicates whether subclasses of the class declared outside this package have access to the member.
What is the use of protected access modifier in Java?
Protected Access Modifier
This access modifier is used to access the methods or data members of a class within the same package as well as outside the package but only through inheritance. The protected access modifier has more accessibility than private and defaults access modifiers.
What is access specifier What is its role?
Access modifiers (or access specifiers) are keywords in object-oriented languages that set the accessibility of classes, methods, and other members. … When the class is declared as public, it is accessible to other classes defined in the same package as well as those defined in other packages.
Can we access protected member outside the package?
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. If you make any constructor protected, you cannot create the instance of that class from outside the package.
Who can access protected method Java?
Variables, methods, and constructors, which are declared protected in a superclass can be accessed only by the subclasses in other package or any class within the package of the protected members’ class. The protected access modifier cannot be applied to class and interfaces.
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.
Can constructor be private?
Yes. Class can have private constructor. Even abstract class can have private constructor. By making constructor private, we prevent the class from being instantiated as well as subclassing of that class.
Can we override static method?
Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).
Can we change access modifier overloading method in Java?
you are right brother ,change in access modifier and return type won’t make methods overloaded . The point is that methods that have same name and different signatures(arguments) are said to be overloaded . This is the sufficient condition for making methods overloaded .