Create Automation Script for popbox handling

package basicexample;
import org.openqa.selenium.By;
import org.openqa.selenium.NoAlertPresentException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
public class AlertBoxExample {
public static void main(String[] args) {
  System.setProperty("webdriver.chrome.driver","c:\\chromedriver.exe");
  WebDriver driver = new ChromeDriver();
  driver.get("http://demo.guru99.com/test/delete_customer.php");
  WebElement ele = driver.findElement(By.name("cusid"));
  ele.sendKeys("1001");
  driver.findElement(By.name("submit")).click();
  String data = driver.switchTo().alert().getText();
  driver.switchTo().alert().dismiss();
  System.out.println(data);
  try
  {
  String data1 = driver.switchTo().alert().getText();
  driver.switchTo().alert().accept();
  System.out.println(data1);
  }
  catch(NoAlertPresentException ex)
  {
  }

}
}