Basic question on how to add to an IntelliJ IDEA project

[RobLewis]

Not exactly a newbie, but I've been away from Java for some time. Now coming back to the latest IntelliJ IDEA version, and I'm stuck trying to add jfreechart to my project.
I've got these Import statements (which display "jfree" in red):
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
and I've added this (perhaps wrongly) to the .iml file:

org.jfree
jfreechart
1.5.5

but the compiler doesn't recognize any of the API calls in the code.
Would appreciate any tips on getting over this hurdle!

[RobLewis]

Oops, the XML in the dependency didn't post correctly. I'll try again…
<dependency> <groupId>org.jfree</groupId> <artifactId>jfreechart</artifactId> <version>1.5.5</version> </dependency>

[trashgod]

I don't use IntelliJ, but I've seen something like this with Maven until jfreechart is present in the local repository and accessible to the IDE, typically after the first compile.

[jfree]

I use IntelliJ IDEA with Maven as the build system. There are some basic instructions on how to create a project and add the JFreechart dependency in the JFreeChart Intro PDF document in the latest release https://github.com/jfree/jfreechart/releases/tag/v1.5.6