ANT: built-in properties

property	description
basedir	the absolute path of the project's basedir (as set with the basedir attribute of <project/>).
ant.file	the absolute path of the buildfile.
ant.version	the version of Ant
ant.project.name	the name of the project that is currently executing; it is set in the name attribute of the .
ant.project.default-target	the name of the currently executing project's default target; it is set via the default attribute of
ant.project.invoked-targets	a comma separated list of the targets that have been specified on the command line (the IDE, an <ant> task ...) when invoking the current project.
ant.java.version	the JVM version Ant detected; currently it can hold the values "1.2", "1.3", "1.4", "1.5" and "1.6".
ant.core.lib	the absolute path of the ant.jar file.
ant.home	home directory of Ant. It is set by the launcher script and therefore maybe not set inside IDEs:
ant.library.dir	the directory that has been used to load Ant's jars from. In most cases this is ANT_HOME/lib.It is only set if Ant is started via the Launcher class (which means it may not be set inside IDEs either)