What is the use of protected modifier?

What is the use of protected modifier?

The protected keyword is an access modifier used for attributes, methods and constructors, making them accessible in the same package and subclasses.

Why do we need to use protected accessibility?

Use it when you need to do some internal stuff that is not exposed in public API but still needs to be overriden by subclasses. You need to use the protected access modifier, when you want the descendant class to see the fields / methods of the super class, BUT you do not want other classes to see these.

Why protected is used?

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.

What is the purpose of protected modifiers in Java programming?

As mentioned before, protected in Java is an access modifier that helps a programmer in assigning the visibility of a class, its members, interfaces, etc. When class members are declared as protected in Java, they are accessible only within the same package as well as to the direct subclasses of the base class.

Why do we need to use protected access modifier instead of private?

Access modifiers do not prevent inheritance. Instead, access modifiers affect what you can and cannot see in the subclass. Those private members and attributes are still in your subclasses. Protected access hides the class’s methods and attributes from classes that exist outside of the class’s package.

Should you use protected?

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.

Can we override protected method as public?

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 the protected access modifier?

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 are the characteristics of a protected access modifier?

The protected access modifier is accessible within package and outside the package but through inheritance only. 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.

What does the protected modifier mean?

“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 a private access modifier?

Private access modifier is the most restrictive access level. Class and interfaces cannot be private. Variables that are declared private can be accessed outside the class, if public getter methods are present in the class.

What is the default access modifier?

The Default access modifier is package-private (i.e DEFAULT) and it is visible only from the same package. Default access modifier – If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes).

What is protected access modifier in Java?

Protected – Protected access modifier in Java is a little more relaxed than the default access. Class members apart from being visible in the same package can also be accessed by a sub class in any package. Public – In case of public access modifier, class is visible to all classes everywhere.