build.xml

<?xml version="1.0" encoding="utf-8"?>

<project default="package">

  <tstamp>
    <format property="version.date" pattern="yyyyMMddhhmmss"/>
  </tstamp>

  <property name="version.tag" value="1.${version.date}"/>

  <target name="package" description="Create executable JAR">
    <exec executable="./mvnw">
      <arg value="package"/>
      <arg value="-Drevision=${version.tag}"/>
    </exec>
  </target>

  <target name="clean">
    <exec executable="./mvnw">
      <arg value="clean"/>
    </exec>
  </target>

</project>