How to use sendKeys method of org.openqa.selenium.remote.RemoteKeyboard class

You can create a method to handle it properly. Note this following is in C#/Java mixed style, you need to tweak a bit to compile.

private boolean isAttribtuePresent(WebElement element, String attribute) {
    Boolean result = false;
    try {
        String value = element.getAttribute(attribute);
        if (value != null){
            result = true;
        }
    } catch (Exception e) {}

    return result;
}

How to use it:

WebElement input = driver.findElement(By.cssSelector("input[name*='response']"));
Boolean checked = isAttribtuePresent(input, "checked");
// do your assertion here

This is a code i use when i need to work with a following pop-up window, close it and go back to my main window. Of course it has been simplified for the purpose of this answer. It maintains a handle of the original window (main) so it can make a difference between the others.

It requires an explicit WebDriverWait because i did have problems during development that code got run before the window actually got open, so this might not be a ideal condition,

function manipulatePopUp(final WebDriver driver, final WebDriverWait wait) {
    final String mainWindowHandle = driver.getWindowHandle();
    driver.findElement(By.id("linkThatOpensPopUp")).click();

    wait.until(new ExpectedConditions<Boolean>() {
        @Override
        public Boolean apply(WebDriver d) {
            return (d.getWindowHandles().size() != 1);
        }
    });

    for (String activeHandle : driver.getWindowHandles()) {
        if (!activeHandle.equals(mainWindowHandle)) {
            driver.switchTo().window(activeHandle);
        }
    }

    driver.close();
    driver.switchTo().window(mainWindowHandle);
}

My recommendation is Testng because, click here the Advantages of Testng & Advantages of TestNG over Junit. also check this

You can also check pageloaded using following code

IWait<IWebDriver> wait = new OpenQA.Selenium.Support.UI.WebDriverWait(driver, TimeSpan.FromSeconds(30.00));

 wait.Until(driver1 => ((IJavaScriptExecutor)driver).ExecuteScript("return document.readyState").Equals("complete"));

You don't need XPath and I wouldn't recommend using xpath in this situation. In this case id can be used as below:

selenium.click("id=Submit"); 

The above code would do what you want.

Just specify the path to the binary of the version..may be, like-

FirefoxBinary binary = new FirefoxBinary(new File("path_to_bin"));
FirefoxProfile profile = new FirefoxProfile();
WebDriver driver = new FirefoxDriver(binary, profile);

In a word, no. It's not possible using the Selenium WebDriver API. This has been discussed ad nauseam in the issue tracker for the project, and the feature will not be added to the API.

Use findElements instead of findElement.

findElements will return an empty list if no matching elements are found instead of an exception.

To check that an element is present, you could try this

Boolean isPresent = driver.findElements(By.yourLocator).size() > 0

This will return true if at least one element is found and false if it does not exist.

The official documentation recommends this method:

findElement should not be used to look for non-present elements, use findElements(By) and assert zero length response instead.

I had the same problem and I finally found a working answer in another thread. Loading of unpacked extensions is disabled by the administrator

The following line did the trickt for me

options.setExperimentalOption("useAutomationExtension", false);

There are some trade-offs mentioned in the link, like window resizing operations with the Chrome automation extension aren't possible anymore. Anyway, starting with the start-maximized argument still worked fine in my code.

options.addArguments("start-maximized");