Can you declare an overridden method to be static if the original method is not static?

Can you declare the override method as static while the original method is non-static? Answer: No, you cannot, the signature of the virtual method must remain the same, only the keyword “virtual” is changed to keyword “override” .

Can you override a method declared as public in a superclass and declare it private in a subclass?

A method declared final cannot be overridden. A subclass within the same package as the instance’s superclass can override any superclass method that is not declared private or final. A subclass in a different package can only override the non-final methods declared public or protected.

How do we prevent a method from being overridden?

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.

How can you allow a base class to get new implementation in derived class?

Override keyword is not only used with virtual, it is also used with abstract. If a base class declares a method as abstract, the method need to be defined in the derived class using override keyword.

Can you overload a static method?

Can we overload static methods? The answer is ‘Yes’. We can have two or more static methods with the same name, but differences in input parameters.

Why static methods should not be overridden?

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).

When should you override a method in a subclass?

When a method in a subclass has the same name, same parameters or signature, and same return type(or sub-type) as a method in its super-class, then the method in the subclass is said to override the method in the super-class.

Which declaration is required to avoid method overriding?

final
Explanation: To disallow a method from being overridden, specify final as a modifier at the start of its declaration. Methods declared as final cannot be overridden.

Which keyword prevents child classes from overriding a method?

Final Keyword ¶ The final keyword prevents child classes from overriding a method or constant by prefixing the definition with final . If the class itself is being defined final then it cannot be extended.

Why we declare a method as virtual?

A method is declared as virtual by specifying the keyword “virtual” in the method signature. A virtual method may or may not have a return type. Virtual methods allow subclasses of the type to override the method. They are used to implement run time polymorphism or late binding.

Is it mandatory to override virtual method in C#?

C# virtual keyword is used to create virtual methods in C#. C# virtual method is a method that can be redefined in derived classes. When a method is declared as a virtual method in a base class and that method has the same definition in a derived class then there is no need to override it in the derived class.

How do you Override method in a derived class?

Method overriding is possible only in derived classes. Because a method is overridden in the derived class from the base class. A non-virtual or a static method can’t be overridden. Both the override method and the virtual method must have the same access level modifier.

What is method overriding in Java?

Method Overriding is a technique that allows the invoking of functions from another class (base class) in the derived class. Creating a method in the derived class with the same signature as a method in the base class is called as method overriding.

How do you access protected members in a derived class?

Protected members that are not declared as static are accessible to friends and member functions in a derived class only through a pointer to, reference to, or object of the derived class. For related information, see friend, public, private, and the member-access table in Controlling Access to Class Members.

Can a protected method be made public in a subclass?

For example, a protected instance method in the super-class can be made public, but not private, in the subclass. Doing so, will generate compile-time error. Final methods can not be overridden : If we don’t want a method to be overridden, we declare it as final. Please see Using final with Inheritance .