The below is a sample build.xml.  The below code should be in build.xml file

<?xml version=”1.0″ encoding=”iso-8859-1″?>
<!DOCTYPE project [
]>

<project name=”Sample Automation” default=”usage” basedir=”.”>

<!– ========== Initialize Properties =================================== –>
<property environment=”env”/>

<property name=”ws.home” value=”${basedir}”/>
<property name=”ws.jars” value=”D:/SeleniumWorkspace1/ProjectName/libs”/>
<property name=”test.dest” value=”${ws.home}/build”/>
<property name=”test.src” value=”${ws.home}/src”/>
<property name=”ng.result” value=”test-output”/>

<!–target name=”start-selenium-server”>
<java jar=”${ws.home}/lib/selenium-server.jar”/>
</target–>

<target name=”setClassPath” unless=”test.classpath”>
<path id=”classpath_jars”>
<fileset dir=”${ws.jars}” includes=”*.jar”/>
</path>
<pathconvert pathsep=”:”
property=”test.classpath”
refid=”classpath_jars”/>
</target>

<target name=”init” depends=”setClassPath”>
<tstamp>
<format property=”start.time” pattern=”MM/dd/yyyy hh:mm aa” />
</tstamp>
<condition property=”ANT”
value=”${env.ANT_HOME}/bin/ant.bat”
else=”${env.ANT_HOME}/bin/ant”>
<os family=”windows” />
</condition>
<taskdef name=”testng” classpath=”${test.classpath}”
classname=”org.testng.TestNGAntTask” />

</target>

<!– all –>
<target name=”all”>
</target>

<!– clean –>
<target name=”clean”>
<delete dir=”${test.dest}”/>
</target>

<!– compile –>
<target name=”compile” depends=”init, clean” >
<delete includeemptydirs=”true” quiet=”true”>
<fileset dir=”${test.dest}” includes=”**/*”/>
</delete>
<echo message=”making directory…”/>
<mkdir dir=”${test.dest}”/>
<echo message=”classpath——: ${test.classpath}”/>
<echo message=”compiling…”/>
<javac
debug=”true”
destdir=”${test.dest}”
srcdir=”${test.src}”
target=”1.6″
classpath=”${test.classpath}”
>
</javac>
</target>

<!– build –>
<target name=”build” depends=”init”>
</target>

<!– run –>
<target name=”run” depends=”compile”>
<testng classpath=”${test.classpath}:${test.dest}” suitename=”TaihoAutomation”>
<xmlfileset dir=”${ws.home}” includes=”testng.xml”/>
</testng>
</target>

<target name=”usage”>
<echo>
ant run will execute the test
</echo>
</target>

<path id=”test.c”>
<fileset dir=”${ws.jars}” includes=”*.jar”/>
</path>

<!– ****************** targets not used ****************** –>

</project>