This directory contains project files for NetBeans. To use, simply choose File->Open Project in NetBeans, and browse to the appropriate folder for the version of NetBeans you are using. If you want to copy the project file to a different location, copy the nbproject directory. Then, edit nbproject/project.xml, and change project.dir to be the correct *relative* path to the root of the Derby tree. The project folder does *not* contain user-specific settings. Those are stored in the user directory (e.g. ~/.netbeans) and in nbproject/private, which is not checked in.