ant-integration-in-maven-antConcat.xml

<?xml version="1.0" encoding="UTF-8" ?>
<project>

    <target name="antConcat">

        <!--
            <buildDir> and <srcDir> properties are pass in pom.xml in ant target configuration
            <rootDir> property pass in antBuild.xml of antBuild target
         -->

        <concat destfile="${buildDir}/classes/file.txt" append="Yes">
            <filelist dir="${rootDir}/data">
                <file name="file1.txt"/>
                <file name="file2.txt"/>
            </filelist>
        </concat>



    </target>

</project>