BUILDING FROM GITHUB: ===================== git clone https://github.com/KentBeck/junit.git cd junit ant dist BUILDING FROM JARS OR ZIPS: =========================== The contents of the zip and jar files are largely maintained for historical reasons. We do not at this time have an official way to build from the src jar or zip. If this is an important missing feature, please let us know at http://github.com/KentBeck/junit/issues