#static binding

JAVA : Post 1.4 : Binding

In the previous post a brief introduction to polymorphism was given.We also discussed that polymorphism are of two types Static Polymorphism and Dynamic Polymorphism. In order to avoid confusion Static Polymorphism is also called as Static binding  or Early Binding and Dynamic Polymorphism is also called Dynamic binding or Later Binding.

As mentioned before in the initial posts i will be…

Method Overloading is a feature that allows a class to have two or more methods having same name, if their argument lists are different.It is used when objects are required to perform similar tasks but using different input parameters. Method overloading increases the readability of the program.

There are two ways to overload the method : 1.By changing number of arguments 2.By changing the data…

#include #include using namespace std; // class declaration for the base class class One { protected: double a; public: One(double = 2); // constructor double f1(double); double f2(double); };// class implementation for One One::One(double val) // constructor { a = val; } double One::f1(double num) { return (num / 2); } double One::f2(double num) { return (pow(f1(num), 2)); // square the result of f1( ) } class Two : public One { public: double f1(double); // this overrides class One's f1( ) // f2( ) function unchanged! }; double Two::f1(double num) { return (num / 3); } int main() { One object_1; Two object_2; // call f2( ) using a base class object call cout << "The computed value using a base class object call is " << object_1.f2(12) << endl; // call f2( ) using a derived class object call cout << "The computed value using a derived class object call is " << object_2.f2(12) << endl; return 0; }

Output:

The computed value using a base class object call is 36 

The computed value using a derived class object call is 36 

If you modify the definition of class One,which is adding a keyword virtual, as follows.

class One { protected: double a; public: One(double = 2); // constructor virtual double f1(double); // a member function double f2(double); // another member function };

Output:

The computed value using a base class object call is 36