code: public void set(double x, double y, double w, double h)
      {
          this.x = x;
          this.y = y;
          width = w;
          height = h;
      }
docs: Sets the location and size.
  
  @param x The horizontal location.
  @param y The vertical location.
  @param w The rectangle width.
  @param h The rectangle height.