// point.java 
// Implementation of point class
class point 
{
   <b>private</b> double x;
   <b>private</b> double y;
   // Default constructor to create origin
   // Pre:  none
   // Post: This object represents origin (0.0, 0.0).
   public point() 
   {
      x = 0.0;
      y = 0.0;
   }
   // Constructor to create point from parameter coordinates
   // Pre:  xCoord and yCoord are double coordinates
   // Post: The object represents the point (xCoord, yCoord).
   public point(double xCoord, double yCoord) 
   {
      x = xCoord;
      y = yCoord;
   }
   // Method to return distance of this point to origin
   // Pre:  The point exists.
   // Post: The function returned the distance of the point to origin.
   public double DistanceToOrigin() 
   {
     return DistanceToPoint(<b>new point(0.0, 0.0)</b>);
   }
   // Method to return distance of this point to a parameter point
   // Pre:  p is a point.
   // Post: The function returned the distance of the point to p.
   public double DistanceToPoint(<b>point p</b>) 
   {
     return <b>Math.sqrt</b>(((x - p.x) * (x - p.x)) + ((y - p.y) * (y - p.y)));
   }
}