package tests;

import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;

public class Login 
{
    @Test
    public void OpenChorme()
    {
        System.setProperty("webdriver.chrome.driver", "/home/kodingwindow/drivers/chromedriver");
        System.out.println("Chrome Thread ID "+Thread.currentThread().getId());
        WebDriver driver = new ChromeDriver();
        driver.navigate().to("http://newtours.demoaut.com");
        driver.findElement(By.name("userName")).sendKeys("mercury");
        driver.findElement(By.name("password")).sendKeys("mercury");
        driver.findElement(By.name("login")).click();
        driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
        driver.close();
    }
}

package tests;
  
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;
  
public class VerifyTitle           
{
    @Test        
    public void OpenFirefox()      
    {
        System.setProperty("webdriver.gecko.driver", "/home/kodingwindow/drivers/geckodriver");
        System.out.println("Firefox Thread ID "+Thread.currentThread().getId());
        WebDriver driver = new FirefoxDriver();
        driver.navigate().to("http://newtours.demoaut.com");  
        if(driver.getTitle().equals("Welcome: Mercury Tours"))
        {        
            System.out.println("Test Passed"); 
        }        
        else     
        {        
            System.out.println("Test Failed"); 
        }        
        driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);        
        driver.close();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Test" parallel="methods" thread-count="2">
    <test name="testngTests">
        <classes>
            <class name="tests.Login" />
            <class name="tests.VerifyTitle" />
        </classes>
    </test> 
</suite>

[RemoteTestNG] detected TestNG version 7.0.0
Chrome Thread ID 11
Firefox Thread ID 12

===============================================
Test
Total tests run: 2, Passes: 2, Failures: 0, Skips: 0
===============================================