Java keeps all functions/method as virtual by default?


#1

What does this statement means? I read about virtual functions in C++ , used for run time polymorphism? is it in the same context


#2

The statement is true that java keeps all functions as virtual. During runtime, if a class has function, it will call it otherwise it will look for its base class.


#3

The methods of the class in Java are virtual by default and it’s meaning is same as in the C++ virtual function. To make methods as non-virtual in Java, use final keyword.The programming example can be seen at http://www.geeksforgeeks.org/g-fact-43/


#4

In object-oriented programming, a virtual function or virtual method is a function or method whose behaviour can be overridden within an inheriting class by a function with the same signature to provide the polymorphic behavior.
Therefore according to definition, every non-static method in JAVA is by default virtual method except final and private methods. The methods which cannot be inherited for polymorphic behavior is not a virtual method.