Ant is a Java based build tool, similar to make, but with better support for the cross platform issues involved with developing Java applications. Ant is the build tool of choice for all Java projects at Apache and many other Open Source Java projects.

Changes:
The javadoc task provides a workaround for the recently patched frame injection vulnerability (CVE-2013-1571) of the javadoc tool found in Oracle JDKs prior to Java 7u25. The task will now post-process the generated files and remove the vulnerability if detected. In addition, some interoperability patches to the tar and zip classes have been applied

URL:
Apache Ant – Freecode