build.xml

<?xml version="1.0"?>
<project name="foobar" basedir="." default="build">
    <property name="src" value="src"/>
    <property name="classes" value="classes"/>
    <property name="input" value="input"/>
    <property name="output" value="output"/>
    <property name="outputjar" value="foobar.jar"/>
    <property name="execdir" value="."/>
    <property name="exec" value="../../bin/hadoop"/>
    <property name="wget" value="wget"/>

    <target name="compile" depends="create">
        <javac destdir="${classes}">            
            <src path="${src}"/>            
            <classpath refid="java"/>
        </javac>
    </target>
               
	
    <target name="fetch_data" depends="createinput">
		<exec dir="${input}" executable="${wget}">
			<arg value="http://ichart.finance.yahoo.com/table.csv?s=BP"/>
		</exec>
	</target>
	
  	<target name="run" depends="cleanoutput">
		<exec dir="${execdir}" executable="${exec}">
			<arg line="jar foobar.jar com.packetnode.FooBar ${input} ${output}"/>
		</exec>
	</target>
	
	<target name="build" depends="jar"/>
	
    <target name="jar" depends="compile">
        <jar destfile="${outputjar}">
            <fileset dir="${classes}"/>
        </jar>
    </target>

    <target name="cleaninput">
        <delete dir="${input}"/>
    </target>

    <target name="cleanoutput">
        <delete dir="${output}"/>
    </target>

    <target name="clean" depends="cleanoutput">
        <delete dir="${classes}"/>
        <delete dir="${output}"/>
    </target>

    <target name="createinput" depends="cleaninput">
        <mkdir dir="${input}"/>
    </target>

    <target name="create" depends="clean">
        <mkdir dir="${classes}"/>
    </target>

    <path id="java">
        <fileset dir="../../">
            <include name="*.jar"/>
        </fileset>
    </path>
</project>