build.xml

<project name="Dorothy" basedir="." default="main">

    <property name="src.dir"     value="src"/>

    <property name="dist.dir"    value="dist"/>
    <property name="src.dir"     value="src"/>
    <property name="lib.dir"     value="lib"/>

    <target name="clean">
        <delete dir="${dist.dir}"/>
    </target>

    <target name="dist">
        <mkdir dir="${dist.dir}"/>
        <copy todir="${dist.dir}">
        	<fileset dir="${src.dir}" />
        	<fileset dir="${lib.dir}" />
		</copy>
    </target>

    <target name="main" depends="clean,dist"/>

</project>