Cannot instantiate class com.qtpselenium.zoho.project.testcases.Lead Test - selenium

Question

My Build.xml as beolw
<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE project []>
<project name="Learning TestNG" default="usage" basedir=".">
<!-- ========== Initialize Properties ============================== -->
<property environment="env"/>
<property name="ws.home" value="${basedir}"/>
<property name="ws.jars" value="E:\SELENIUM_DOWNLOADS\Selenium Jars"/>
<property name="test.dest" value="${ws.home}/build"/>
<property name="test.src" value="${ws.home}/src"/>
<property name="testng-report-dir" value="${test.src}/TestNGreport" />
<!--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>
<path id="testcase.path">
<pathelement location="${test.dest}"/>
<fileset dir="${ws.jars}">
<include name="*.jar"/>
</fileset>
</path>
<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="${test.src}"
classpath="${test.classpath}"
includeantruntime="false" >
</javac>
</target>
<!-- build -->
<target name="build" depends="init">
</target>
<!-- run -->
<target name="run" depends="compile">
<testng classpath="${test.classpath}: ${test.dest}"
suitename="SuiteName">
<xmlfileset dir="src/test/resources/" includes="TestNG.xml"/>
</testng>
</target>
<target name="usage">
<echo>
ant run will execute the test
</echo>
</target>
<path id="test.c">
<fileset dir="${ws.jars}" includes="*.jar"/>
</path>
<target name="makexsltreports">
<mkdir dir="${ws.home}/XSLT_Reports/output"/>
<xslt in="${ng.result}/testng-results.xml" style="src/test
/resources/testng-results.xsl" out="${ws.home}/XSLT_Reports/output
/index.html" classpathref="test.c" processor="SaxonLiaison">
<param name="testNgXslt.outputDir" expression="${ws.home}/XSLT_Reports
/output/"/>
<param name="testNgXslt.showRuntimeTotals" expression="true"/>
</xslt>
</target>
</project>
TestNG.xml is as below
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >
<suite name="SuiteName">
<test name="Login Test" allow-return-values="true">
<classes>
<class name="com.qtpselenium.zoho.project.testcases.LoginTest" />
</classes>
</test>
<test name="Lead Test" allow-return-values="true">
<classes>
<class name="com.qtpselenium.zoho.project.testcases.LeadTest" />
</classes>
</test>
Error displayed below
run:
[testng] [TestNG] [ERROR]
[testng] Cannot instantiate class com.qtpselenium.zoho.project.testcases.Lead
Test
BUILD SUCCESSFUL
Total time: 3 seconds
what will be solution for this not getting route cause..please it will better as early as possible