public static void testAlert(WebDriver driver)

    {

        String url="http://sislands.com/coin70/week1/dialogbox.htm";

        driver.get(url);

        WebElement alertButton = driver.findElement(By.xpath("//input[@value='alert']"));

        alertButton.click();

        Alert javascriptAlert = driver.switchTo().alert();

        System.out.println(javascriptAlert.getText());

        javascriptAlert.accept();

    }

    public static void testPrompt(WebDriver driver) throws Exception

    {

        String url="http://sislands.com/coin70/week1/dialogbox.htm";

        driver.get(url);

        WebElement promptButton = driver.findElement(By.xpath("//input[@value='prompt']"));

        promptButton.click();

        Thread.sleep(2000);

        Alert javascriptPrompt = driver.switchTo().alert();

        javascriptPrompt.sendKeys("This is learning Selenium");

        javascriptPrompt.accept();    

        System.out.println(javascriptPrompt.getText());

        javascriptPrompt=driver.switchTo().alert();

        javascriptPrompt.accept();

        Thread.sleep(2000);

        promptButton.click();

        javascriptPrompt=driver.switchTo().alert();

        javascriptPrompt.dismiss();

        Thread.sleep(2000);

        javascriptPrompt=driver.switchTo().alert();

        javascriptPrompt.accept();

    }

    public static void testConfirm(WebDriver driver) throws Exception

    {

        String url="http://sislands.com/coin70/week1/dialogbox.htm";

        driver.get(url);

        WebElement confirmButton = driver.findElement(By.xpath("//input[@value='confirm']"));

        confirmButton.click();

        Thread.sleep(2000);

        Alert javascriptConfirm = driver.switchTo().alert();

        javascriptConfirm.accept();

        Thread.sleep(2000);

        javascriptConfirm = driver.switchTo().alert();

        javascriptConfirm.accept();

    }