<dependency>
  <groupId>jfree</groupId>
  <artifactId>jfreechart-experimental</artifactId>
  <version>1.0.4</version>
</dependency>

implementation 'jfree:jfreechart-experimental:1.0.4'

implementation("jfree:jfreechart-experimental:1.0.4")

libraryDependencies += "jfree" % "jfreechart-experimental" % "1.0.4"

@Grapes(
  @Grab(group='jfree', module='jfreechart-experimental', version='1.0.4')
)

<dependency org="jfree" name="jfreechart-experimental" rev="1.0.4" />

[jfree/jfreechart-experimental "1.0.4"]

'jfree:jfreechart-experimental:jar:1.0.4'