title: How to make the opening of browser(all test in one browser) static in testng for selenium
body: <p>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.</p>
  
  <pre><code>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();
  }
  </code></pre>
  
  <p>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</p>