Executing Sequence of Selenium Test Cases in a Cusomized Sequence

While automating any application we come across a situation where we need to execute multiple test cases in a particular sequence. But when it comes to execute the test cases they will execute randomly. In order to execute the test cases in our pre requisite order we need to pass a parameter to @Test method priority and a value(Lower priorities will be scheduled first). 

Following code will be useful to accomplish the requirement:
 

 import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

public class OrderOfTestCase {

 public String baseURL = "http://www.google.com";
 public WebDriver driver = new FirefoxDriver();

 @BeforeTest
 public void launchBrowser()
 {
  driver.get(baseURL);
 }

 @AfterTest
 public void closeBrowser()
 {
  driver.quit();
 }

 @BeforeMethod
 public void getTitle()
 {
  System.out.println(driver.getTitle());
 }
 @AfterMethod
 public void goToPreviousPage()
 {
  driver.navigate().back();
 }

 @Test(priority = 0)
 public void images() throws InterruptedException
 {
  driver.findElement(By.linkText("Images")).click();
  Thread.sleep(3000);
  System.out.println(driver.getTitle());
 }

 @Test(priority = 1)
 public void maps() throws InterruptedException
 {
  driver.findElement(By.linkText("Maps")).click();
  Thread.sleep(3000);
  System.out.println(driver.getTitle());
 }

 @Test(priority = 2)
 public void mail() throws InterruptedException
 {
  driver.findElement(By.linkText("Gmail")).click();
  Thread.sleep(3000);
  System.out.println(driver.getTitle());
 }

}