Handling Alert in selenium

 import java.util.concurrent.TimeUnit;  
 import org.openqa.selenium.Alert;  
 import org.openqa.selenium.By;  
 import org.openqa.selenium.WebDriver;  
 import org.openqa.selenium.chrome.ChromeDriver;  
 public class AlertPopup {  
      public static void main(String[] args) {  
           System.setProperty("webdriver.chrome.driver",  
                     "C:\\Users\\Mutturaj\\Downloads\\chromedriver_win32\\chromedriver.exe");  
           WebDriver driver = new ChromeDriver();  
           driver.manage().window().maximize();  
           driver.manage().deleteAllCookies();  
           driver.manage().timeouts().pageLoadTimeout(40, TimeUnit.SECONDS);  
           driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);  
           driver.get("https://mail.rediff.com/cgi-bin/login.cgi");  
           driver.findElement(By.name("proceed")).click();  
           Alert alert = driver.switchTo().alert();  
           System.out.println(alert.getText());  
           alert.accept();  

           // other importent methods  
           /*  
            * alert.getText() alert.dismiss(); alert.sendKeys("text");  
            */  
      }  
 }