To use the charts4j API, put this jar (found in the charts4j-[VERSION]/lib directory) in your classpath: charts4j-[VERSION].jar To run the unit tests you will also need junit-[VERSION].jar For Maven, include this XML snippet in your pom.xml. <dependency> <groupId>com.googlecode.charts4j</groupId> <artifactId>charts4j</artifactId> <version>[VERSION]</version> </dependency> For Leiningen Clojure, users please use: [com.googlecode.charts4j/charts4j "[VERSION]"]