org.jfree.chart.renderer.xy.XYItemRenderer Interface for rendering the visual representation of a single (x, y) item on an {@link XYPlot}. <p> To support cloning charts, it is recommended that renderers implement both the {@link Cloneable} and <code>PublicCloneable</code> interfaces.
org.jfree.chart.renderer.category.CategoryItemRenderer A plug-in object that is used by the {@link CategoryPlot} class to display individual data items from a {@link CategoryDataset}. <p> This interface defines the methods that must be provided by all renderers. If you are implementing a custom renderer, you should consider extending the {@link ...
org.jfree.chart.renderer.xy.XYDifferenceRenderer A renderer for an {@link XYPlot} that highlights the differences between two series. The renderer expects a dataset that: <ul> <li>has exactly two series;</li> <li>each series has the same x-values;</li> <li>no <code>null</code> values; </ul>