Ant uses build specification files written in XML.
There are a defined set of XML elements that Ant
understands.
Ant can be extended.
The default build file is called build.xml .
One runs ant using the command:
ant (uses the default build.xml file, executes the default target in that file)
ant targetname(build.xml, specific target)
ant -buildfile buildfilename targetname(use a different build file, specific target)