How to execute testng.xml file from main() method or from class/programm

Project Folder structure:

Testng.xml code:

<?xml version="1.0" encoding="UTF-8"?>

<suite name="Suite" parallel="methods">

  <test name="Sanity">

  

      <classes>

         <class name="interview.Auto_Suggetins_Pass"/>

         

     </classes>

  </test>

     

</suite>

My class file :  to run testng.xml file from class or main method

package interview;

import java.util.List;

import org.testng.TestListenerAdapter;

import org.testng.TestNG;

import org.testng.collections.Lists;

public class Run_TestNGxml_from_main_method {

public static void main(String[] args) {

// //working fine way 1

/*List<String> suites = Lists.newArrayList();

          TestListenerAdapter tla = new TestListenerAdapter();

            TestNG testng = new TestNG();

            Class[] classes = new Class[]{interview.Auto_Suggetins_Pass.class};

             testng.setTestClasses(classes);

            testng.addListener(tla);

             testng.run();*/

             //working fine way 2 

             

  List<String> suites = Lists.newArrayList();         

       TestListenerAdapter tla = new TestListenerAdapter();

       TestNG testng = new TestNG();

       suites.add("testng.xml");

       testng.setTestSuites(suites);

       testng.addListener(tla);

       testng.run();

}

}