This page describes what you need to start with OpenLowcode PDF.

You need to download the package jar, and also dependencies, and integrate it in your project.

The project is dependent from Apache PDFBox. Open Lowcode PDF was built using PDFBox 2.0.7, though it should also work with most recent versions (as of writing, current version is PDFBox2.0.14). Be careful that you will need to also download Apache Apache commons loggings, as this is a dependency of Apache PDF Box.

The best is probably to look at the sample, and modify it. You may also want to review the javadoc.