code: protected void paintAxes(Graphics g) {
  		Point origin = getPaintingRegion().getBottomLeft();
  		if(isAxisPaintedfor(ValueDimension.X)) {
  			Point xEnd = getXAxisEnd();
  			g.drawLine(origin.x, origin.y, xEnd.x, xEnd.y);
  		}
  		if(isAxisPaintedfor(ValueDimension.Y)) {
  			Point yEnd = getYAxisEnd();
  			g.drawLine(origin.x, origin.y, yEnd.x, yEnd.y);
  		}
  	}
docs: Paints axes for all maintained dimensions (in this case two).<br>
  Has to be overridden by subclasses, if more than two dimensions have to be considered.
  @param g Graphics context.