How to make the opening of browser(all test in one browser) static in testng for selenium [duplicate]

Question

I am using selenium and testNG framework for my project. Now what is happening is each class is opening up a browser and then run its methods, eg, if I have five classes, then five browsers will open simultaneously and then run the tests. I want to Open Browser at the start once and run all the methods and then close it.

public class openSite
{
public static WebDriver driver;
@test
public void openMain()
{
  System.setProperty("webdriver.chrome.driver","E:/drive/chromedriver.exe");
  WebDriver driver = new ChromeDriver();
  driver.get("http://vtu.ac.in/");
}
@test
//Clicking on the first link on the page
public void aboutVTU()
{
driver.findElement(By.id("menu-item-323")).click();
}
@Test
//clicking on the 2nd link in the page
public void Institutes()
{
driver.findElement(By.id("menu-item-325")).click();
}

Now What I want is the testNG should open browser once and open vtu.ac.in once and then execute the methods aboutVTU and Institutes and give me the result

Answer 1

You mean to say in one class multiple methods you want to run, then use below code and try.

    @BeforeTest
    public static void beforeMethod() {
    driver= new FirefoxDriver();
    }
    @Test
    public void main1() {
    driver.get("http://indianrail.gov.in/pnr_Enq.html");
    driver.findElement(By.id("element")).sendKeys("1234567890");
    String captcha = driver.findElement(By.id("txtCaptchaDiv")).getText();
    System.out.println("Captcha is: " +captcha);
    driver.findElement(By.id("txtInput")).sendKeys(captcha);
    }
    @Test
    public void main2() {
    driver.findElement(By.className("btn_style")).click();
    }
    @Test
    public void main3() {
    System.out.println("The title is: " +driver.getTitle());
    }