Selenium Javascript and Alert Handling

package TestCases;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;

public class JavaScriptExecutor {



@Test
    public void Login() throws InterruptedException
    { System.setProperty("webdriver.chrome.driver", "G:\\chromedriver (2).exe");
        WebDriver driver= new ChromeDriver();
       
        //Creating the JavascriptExecutor interface object by Type casting
        JavascriptExecutor js = (JavascriptExecutor)driver;
       
        //Launching the Site.
        driver.get("http://moneyboats.com/");
   
        //Maximize window
        driver.manage().window().maximize();
       
        Thread.sleep(5000);
       
        //Vertical scroll down by 600  pixels
        js.executeScript("window.scrollBy(0,600)");
       
        //Adding javascript alert to webpage
        js.executeScript("window.alert(\"sometext\")");
       
       
        System.out.println(driver.switchTo().alert().getText()); //sometext
        //Accepting the Alert
        driver.switchTo().alert().accept();
    }
}