I have an XYLineChart generated from an XYSeriesCollection.
The chart looks like that:

I would like to customize it in order to put into evidence the domain axis entry of the dataset, using some dots (or circles, or squares). It should look like:

Has JFreeChart some feature do achieve that result?
Any suggestion?
Yep: see the image in http://www.jfree.org/jfreechart/api/javadoc/org/jfree/chart/renderer/category/LineAndShapeRenderer.html, and unless I’m wrong you can do it using this.