TestNG Launch Browser

package testNG;
 
import org.testng.annotations.Test;
import org.testng.annotations.BeforeTest;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.AfterTest;
 
public class LaunchBrowser {
WebDriver driver;
 
  @Test
  public void bharathnewsapp_Contact() {
  driver.findElement(By.linkText("Contact Us")).click();
  }
  
    
  @BeforeTest
  public void beforeTest() {
  System.setProperty("webdriver.chrome.driver", "G:\\Lib\\chromedriver.exe");
driver = new ChromeDriver();
driver.manage().window().maximize();
driver.get("http://bharathnewsapp.com/");   
  }
 
  @AfterTest
  public void afterTest() {
//  driver.close();
// driver.quit();
  }
 
}