Updating testng xml at runtime

import java.util.ArrayList;
import java.util.List;
import org.openqa.selenium.WebDriver;
import org.testng.ITestContext;
import org.testng.ITestListener;
import org.testng.ITestResult;
import org.testng.xml.XmlClass;
import org.testng.xml.XmlSuite;
import org.testng.xml.XmlTest;
public class WebdriverITestListener implements ITestListener {
boolean ischecked=true;
public static XmlSuite suite ;
@Override
public void onFinish(ITestContext arg0) {
// TODO Auto-generated method stub
}
@Override
public void onTestFailedButWithinSuccessPercentage(ITestResult arg0) {
// TODO Auto-generated method stub
}
@Override
public void onTestFailure(ITestResult test) {
// TODO Auto-generated method stub
}
@Override
public void onTestSkipped(ITestResult arg0) {
// TODO Auto-generated method stub
}
@Override
public void onTestStart(ITestResult test) {
// TODO Auto-generated method stub
String browserName=test.getMethod().getXmlTest().getParameter("browserName");
if(ischecked)
{
List tests = new ArrayList();
XmlTest testsuite = new XmlTest(test.getMethod().getXmlTest().getSuite());
testsuite.setName("defalut");
List xmlclasses = new ArrayList();
xmlclasses.add(new XmlClass("TESTCASE NAME"));
testsuite.addParameter("browserName","firefox");
testsuite.setXmlClasses(xmlclasses);
tests.add(testsuite);
suite.setTests(tests);
test.getMethod().getXmlTest().setXmlSuite(suite);
ischecked=false;
}
System.out.println(test.getMethod().getXmlTest().getSuite()+"  ------------------   ");
WebDriver driver;
try {
driver = LocalDriverFactory.createInstance(browserName);
LocalDriverManager.setWebDriver(driver);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void onTestSuccess(ITestResult arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStart(ITestContext test) {
- hide quoted text -

}
}