Testing Servlets

[Manohar Karamballi]

I have newbie these testing Unit world..
I am facing following problem in using servlet unit.
my testcase code..

public class ODDSControllerSTest extends TestCase
{
public static void main(String args[])
{
junit.textui.TestRunner.run( suite() );
}
public static Test suite()
{
return new TestSuite( ODDSControllerSTest.class );
}

public ODDSControllerSTest( String name )
{
super( name );
}
public void testHeader() throws Exception
{
WebConversation conversation = new WebConversation();
WebRequest request = new GetMethodWebRequest( "http://localhost:8080/LNT/ODDSControllerS" );
WebResponse response = conversation.getResponse( request );
assertEquals("Response failed",200,response.getResponseCode());
}

}*/

//import junit related classes
import com.meterware.servletunit.*;
import com.meterware.httpunit.*;
import junit.framework.*;
//import javax related classes
import javax.servlet.ServletOutputStream;
//import java related classes
import java.io.*;
public class LNTControllerSTest extends TestCase
{
public void testForwardToRetrieveJSP() throws Exception
{
ServletRunner sr = new ServletRunner( "web.xml" );
ServletUnitClient client = sr.newClient();
}
}
@ line2 that is getting client ,am getting error
java.lang.ExceptionininitializeError
pls help me out

TIA
Manohar