******** Jakarta Regexp has been retired. See Apache Attic site: http://attic.apache.org ******** Ant is a build system that was developed for the Jakarta Tomcat project and was used internally at Sun. It was originally developed by James Davidson and has been extended by others including myself. When Jakarta was released as Open Source, the developer community also obtained the source to Ant as well. This is a great addition to the community. You can obtain the Ant source code from . It is currently located in the jakarta-tools CVS repository. The build.xml file is the "code" that tells Ant what to do. The beauty of Ant is that it is entirely XML based so creating installation scripts is as easy as creating a XML file. You should not need to edit the build.xml file unless you wish to change paths of things. To build regexp, download and install Ant and invoke 'ant' script from this directory. -jon stevens jons@apache.org