JUnit is a regression testing framework written by Erich Gamma and Kent Beck. It is used by the developer who implements unit tests in Java.
JUnit is Open Source Software, released under the Common Public License Version 1.0 and hosted on SourceForge.
SourceForge
Common Public License Version 1.0
PDFBox is an open source Java PDF library for working with PDF documents. This project allows creation of new PDF documents, manipulation of existing
documents and the ability to extract content from documents. PDFBox also includes several command line utilities.
Apache
Apache Licence 2.0
With log4j it is possible to enable logging at runtime without modifying the application binary. The log4j package is designed so that these statements
can remain in shipped code without incurring a heavy performance cost. Logging behavior can be controlled by editing a configuration file, without
touching the application binary. Since the Version 0.92 of JPdfUnit the Log4j dependency is removed because the Pdfbox no longer requires it!
Log4j Project
Apache Licence 2.0
A small presentation which introduces JPdfUnit
a short introduction