Javalib Core is a common core for all Robot Framework test libraries written in Java.
Usage instructions can be found on the project Wiki: https://github.com/robotframework/JavalibCore/wiki
Project jar can be downloaded directly from the Maven Repository
<dependency>
<groupId>org.robotframework</groupId>
<artifactId>javalib-core</artifactId>
<version>2.0.3</version>
</dependency>
Although it's prefered to use it as Maven dependency
The project was originally hosted at Google Code