code: public void set(double x, double y, double width, double height) {
          this.x = x;
          this.y = y;
          this.width = width;
          this.height = height;
      }
docs: Sets x,y-coordinate, width and height.
  
  @param x The x-coordinate of the center of the Ellipse.
  @param y The y-coordinate of the center of the Ellipse.
  @param width The width of the Ellipse.
  @param height The height of the Ellipse.