Over Loading and Overriding

In a class if two method is having the same name and different signature,its known as overloading in Object oriented concepts.

For eg  Take the case of a Shape Class. having  a method with a name DrawShape();

This method has two definitins with different parameters.

public void DrawShape(int x1, int y1,int x2,int y2)
{
 // draw a rectangle.
}

public void DrawShape(int x1,int y1)
{

// draw aline.
}

Overriding means, to give a specific definition by the derived class for a method implemented in the base class.

For eg.



Class Rectangle
{

   publc void DrawRectangle()
  {
    // this method will draw a rectangle.
  }

}


Class RoundRectangle : Rectanlge
{

  public void DrawRectangle()
  {

      //Here the DrawRectangle() method is overridden in the
     // derived class to draw a specific implementation to the
     //derived class, i.e to draw a rectangle with rounded corner.

  }
}