Selenium using Data Provider Method

 package coaching;

import java.time.Duration;

import org.openqa.selenium.By;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.WebElement;

import org.openqa.selenium.chrome.ChromeDriver;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

public class DataProviderTest {

WebDriver driver;

@DataProvider(name = "Authentication")

 public static Object[][] credentials() {

           // The number of times data is repeated, test will be executed the same no. of times

          // Here it will execute two times

           return new Object[][] { { "suriya", "Test@123" }, { "parithy", "Test@123" }};

     }

@Test(dataProvider = "Authentication")

  public void test(String username, String password) {

System.setProperty("webdriver.chrome.driver", "F:\\Suriya\\chromedriver.exe");

driver = new ChromeDriver();

driver.manage().window().maximize();

driver.manage().deleteAllCookies();

driver.manage().timeouts().pageLoadTimeout(Duration.ofSeconds(30));

driver.manage().timeouts().implicitlyWait(Duration.ofSeconds(30));

driver.get("URL");

WebElement username1 = driver.findElement(By.id("userName"));

username1.sendKeys(username);

                       WebElement password1 = driver.findElement(By.id("pwd"));

password1.sendKeys(password);

                      WebElement login = driver.findElement(By.cssSelector(".btn:nth-child(3)"));

login.click();

   }

}