How polymorphism is used in java?

Polymorphism is the feature that allows one interface to be used for general class actions.

class CPolygon {

protected:

int width, height;

public:

void set_values (int a, int b)

{ width=a; height=b; }

virtual int area (void) =0;

void printarea (void)

{ cout << this->area() << endl; }

};

class CRectangle: public CPolygon {

public:

int area (void)

{ return (width * height); }

};

class CTriangle: public CPolygon {

public:

int area (void)

{ return (width * height / 2); }

};

int main () {

CPolygon * ppoly1 = new CRectangle;

CPolygon * ppoly2 = new CTriangle;

ppoly1->set_values (4,5);

ppoly2->set_values (4,5);

ppoly1->printarea();

ppoly2->printarea();

delete ppoly1;

delete ppoly2;

return 0;

}

By

MUTHU