Testng In Parallel

Execute more testng xml files in parallel with TestNG program

Code as foolow

  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.util.List;
  import javax.xml.parsers.ParserConfigurationException;
  import org.testng.xml.Parser;
  import org.testng.xml.XmlSuite;
  import org.testng.TestNG;
  import org.xml.sax.SAXException;
  
  public class MultipleXmls{
        public static void main(String[] args) throws FileNotFoundException, ParserConfigurationException, SAXException, IOException {
		TestNG testng = new TestNG(); 
		testng.setXmlSuites((List <XmlSuite>)(new Parser("Test.xml").parse()));		
		testng.setSuiteThreadPoolSize(3);
		testng.run();
        }
  }

In Test.xml the content should be like,

  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
  <suite name="Multiple Suites"> 
      <suite-files>
  	<suite-file path="filepath1" />
  	<suite-file path="filepath2" />
  	<suite-file path="filepath3" />
      </suite-files>
  </suite>

<WRAP left round help 60%> Tow questions:

1. How can do this via the TestNG xml suite file, without using the TestNG APIs?

2. How to determine that the suites are INDEED running in parallel ? [Thread.getCurrentThread().getId() ? Suites run in parallel when enable parallelism at every suite level itself.]