JDO 3.1 March 20, 2015
A release of JDO includes the JDO API and the Technology Compatibility Kit (TCK). The TCK is available only in source form. The API project is available as source and binary, and as raw jar files.
All are available for download as source, but if you wish to run the TCK you need only download the TCK project. The dependencies will be automatically downloaded by maven as jar files.
For information on running the TCK, see TCK. If downloading multiple source packages, extract them all into the same directory. This will preserve the source dependencies among the projects.
See Source Code Version Control for information about downloading the latest source code for all of the JDO projects.