In addition, Ant has some built-in properties

In addition, Ant has some built-in properties

ant.apache.org

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 <project>.
ant.project.default-target
                    the name of the currently executing project's
                    default target;  it is set via the default
                    attribute of <project>.
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.
                    This property is set properly when the first target is executed.
                    If you use it in the implicit target (directly
                    under the <project> tag) the list will be
                    empty if no target has been specified while it
                    will contain the project's default target in this
                    case for tasks nested into targets..
ant.java.version    the JVM version Ant detected; currently it can hold
                    the values "1.9", "1.8",
                    "1.7", "1.6", "1.5",
                    "1.4", "1.3" and
                    "1.2".  ant.core.lib the absolute path
                    of the ant.jar file.