How to use RoutableHttpClientFactory class of org.openqa.selenium.grid.web package

You don't need to convert the whole array. Just call File's getAbsolutePath() method:

driver.findElement(By.id(id1)).sendKeys(listOfFiles[1].getAbsolutePath());

But if you do want to convert the whole array, here is the Java 8 way to do this (simplified by @RemigiusStalder):

String listOfPaths[] = Arrays.stream(listOfFiles).map(File::getAbsolutePath)
        .toArray(String[]::new);

Okay I found out the solution to the problem myself.

The problem lied in the way I was creating the Runnable JAR file in Eclipse. I was selecting the Extract required libraries into generated JAR option (selected by Eclipse by default) under the Library handling label on the first page. By doing so it was not packing the required external Selenium, TestNG and JRE System Library, JAR file libraries in my runnable JAR, hence it was not able to find the required classes. My JAR started working perfectly after selecting the second option, Package required libraries into generated JAR.

Try this:

 driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);

Scenario/Test steps:
1. Open a browser and navigate to TestURL
2. Scroll down some pixel and scroll up

For Scroll down:

WebDriver driver = new FirefoxDriver();
JavascriptExecutor jse = (JavascriptExecutor)driver;
jse.executeScript("window.scrollBy(0,250)");

OR, you can do as follows:

jse.executeScript("scroll(0, 250);");

For Scroll up:

jse.executeScript("window.scrollBy(0,-250)");
OR,
jse.executeScript("scroll(0, -250);");

Scroll to the bottom of the page:

Scenario/Test steps:
1. Open a browser and navigate to TestURL
2. Scroll to the bottom of the page

Way 1: By using JavaScriptExecutor

jse.executeScript("window.scrollTo(0, document.body.scrollHeight)");

Way 2: By pressing ctrl+end

driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL, Keys.END);

Way 3: By using Java Robot class

Robot robot = new Robot();
robot.keyPress(KeyEvent.VK_CONTROL);
robot.keyPress(KeyEvent.VK_END);
robot.keyRelease(KeyEvent.VK_END);
robot.keyRelease(KeyEvent.VK_CONTROL);

String userAgent = (String) ((JavascriptExecutor) driver).executeScript("return navigator.userAgent;");

Short answer is that isVisible is method of old Selenium RC and isDisplayed is method of Selenium 2.

If you are talking about WebDrivers WebElement, it contains only isDisplayed() method, which by the doc:

Is this element displayed or not? This method avoids the problem of having to parse an element's "style" attribute.

Before webdriver we had Selenium RC, which is now long deprecated, the DefaultSelenium class had isVisible() method that:

Determines if the specified element is visible. An element can be rendered invisible by setting the CSS "visibility" property to "hidden", or the "display" property to "none", either for the element itself or one if its ancestors. This method will fail if the element is not present.

reference

Try this code:

The below code used to check the text presence in the entire web page.

if(driver.getPageSource().contains("your Text"))
{
    //Click xyz
}

else
{
    //Click abc
}

If you want to check the text on a particular web element

if(driver.findElement(By.id("Locator ID")).getText().equalsIgnoreCase("Yor Text"))
{
    //Click xyz
}

else
{
    //Click abc
}

You could execute some javascript to interrogate the DOM. Specifically, the complete property of an HTMLImageElement.

public static void waitUntilVisible(WebDriver webDriver, By locator) {
    WebDriverWait driverWait = new WebDriverWait(webDriver, TIMEOUT);
    WebElement el = webDriver.findElement(locator);
    driverWait.until(
        new Predicate<WebDriver>() {
            public boolean apply(WebDriver driver) {
                return ((JavascriptExecutor)driver).executeScript("return arguments[0].complete", el);
            }
        }
    );
}

But note that complete:

Returns a Boolean that is true if the browser has finished fetching the image, whether successful or not. It also shows true, if the image has no src value.

You have to use window handle function here. Here is a sample working code in java:

    String parentHandle = driver.getWindowHandle(); // get the current window handle
    System.out.println(parentHandle);               //Prints the parent window handle 
    String anchorURL = anchor.getAttribute("href"); //Assuming u are clicking on a link which opens a new browser window
    anchor.click();                                 //Clicking on this window
    for (String winHandle : driver.getWindowHandles()) { //Gets the new window handle
        System.out.println(winHandle);
        driver.switchTo().window(winHandle);        // switch focus of WebDriver to the next found window handle (that's your newly opened window)              
    }
//Now your driver works on the current new handle
//Do some work here.....
//Time to go back to parent window
    driver.close();                                 // close newly opened window when done with it
    driver.switchTo().window(parentHandle);         // switch back to the original window

Hope this helps!