การดำเนินการแบบขนานใน Selenium

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class SessionHandling {
    public static void main(String... strings) {
        // First session of WebDriver
        WebDriver driver = new FirefoxDriver();
        // Go to guru99 demo site
        driver.get("https://demo.guru99.com/V4/");

        // Second session of WebDriver
        WebDriver driver2 = new FirefoxDriver();
        // Go to guru99 demo site
        driver2.get("https://demo.guru99.com/V4/");
    }
}

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;

public class TestGuru99MultipleSession {

    @Test
    public void executeSessionOne() {
        // First session of WebDriver
        System.setProperty("webdriver.chrome.driver", "chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://demo.guru99.com/V4/");
        // Find the user name text box and fill it
        driver.findElement(By.name("uid")).sendKeys("Driver 1");
    }

    @Test
    public void executeSessionTwo() {
        // Second session of WebDriver
        System.setProperty("webdriver.chrome.driver", "chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://demo.guru99.com/V4/");
        driver.findElement(By.name("uid")).sendKeys("Driver 2");
    }

    @Test
    public void executeSessionThree() {
        // Third session of WebDriver
        System.setProperty("webdriver.chrome.driver", "chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://demo.guru99.com/V4/");
        driver.findElement(By.name("uid")).sendKeys("Driver 3");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="TestSuite" thread-count="3" parallel="methods">
  <test name="testGuru">
    <classes>
      <class name="TestGuru99MultipleSession"/>
    </classes>
  </test>
</suite>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="TestSuite" thread-count="3" parallel="methods">
  <test name="testGuru">
    <classes>
      <class name="TestGuru99MultipleSession">
        <include name="testGuru99TC1" dependsOnMethods="testGuru99TC2"/>
        <include name="testGuru99TC2"/>
      </class>
    </classes>
  </test>
</suite>