How to use getHostAddress method of org.openqa.selenium.net.NetworkUtils class

First store that element in object, let's say element and then write following code to click on that hidden element:

JavascriptExecutor js = (JavascriptExecutor)driver;
js.executeScript("arguments[0].click();", element);

This should work:

driver.findElement(By.LinkText("Users")).click();

By LinkText is possible

Easiest solution would be, add the below lines in surefire plugin.

<suiteXmlFiles>
    <!-- pass testng.xml files as argument from command line -->
    <suiteXmlFile>${suiteXmlFile}</suiteXmlFile>
</suiteXmlFiles>

And run your xml file as below,

mvn clean test -Dsurefire.suiteXmlFiles=/path/to/testng.xml

Make sure browser window should be active.

You can perform using actions

Actions actions = new Actions(driver);
actions.keyDown(Keys.ALT);
actions.sendKeys(Keys.F4);
actions.keyUp(Keys.ALT);
actions.perform();

Same you can achieve using Robot. To get this code running you need to add,

import java.awt.Robot;

Robot robot = new Robot();
// press key Alt+F4
robot.keyPress(KeyEvent.VK_ALT);
robot.delay(100);
robot.keyPress(KeyEvent.VK_F4);
// relase key Alt+F4
robot.delay(100);
robot.keyRelease(KeyEvent.VK_F4);
robot.delay(100);
robot.keyRelease(KeyEvent.VK_ALT);

If you do not use driver.quit() at the end of program, WebDriver session will not close properly and files would not be cleared off memory. This may result in memory leak errors. Hope it is clear.

Use full resource ID ...It worked for me....

below line worked for me.... driver.findElement(MobileBy.id("com.android.packageinstaller:id/permission_allow_button")).click();

You find the parent div first, then locate all target elements, then count them.

List<WebElement> forms = driver.findElements(By.cssSelector(".product_row form"));
int count = forms.size();

Yes, this is definitely possible. See this:

// Find the outer element.
WebElement outer = driver.findElement(By.anything("whatever"));

// This doesn't work, it searches the whole page for the XPath expression.
WebElement inner = outer.findElement(By.xpath("//some/nasty/xpath"));

// This works! It takes the outer element as root.
WebElement inner = outer.findElement(By.xpath(".//some/nasty/xpath"));

Therefore, if I understood your need well, your XPath expression needs to look like this:

By.xpath("(.//tbody)[" + j + "]//div[text()=\"" + collector + "\"])")

EDIT (Holy cow, that's a lot of HTML and only a small amount of it is actually needed :).)

Now that I caught what you're after, I think you don't need this approach at all. Try this instead:

WebElement row = driver.findElement(By.xpath("id('CollectorQoSPerformanceMetricsgrid')//div[contains(@class,'x-grid3-row x-unselectable-single') and .//u[text()='" + collector + "']]"));

Only the XPath expression:

id('CollectorQoSPerformanceMetricsgrid')
    //div[contains(@class,'x-grid3-row x-unselectable-single')
          and .//u[text()='" + collector + "'] ]

Taken apart:

FIND ELEM WITH ID = 'CollectorQoSPerformanceMetricsgrid'
id('CollectorQoSPerformanceMetricsgrid')
    FIND ALL DIV ELEMS THAT CONTAIN 'x-grid3-row x-unselectable-single' IN @CLASS
    //div[contains(@class,'x-grid3-row x-unselectable-single')
          AND HAVE AN <U> DESCENDANT WITH TEXT EQUAL TO collector VARIABLE
          and .//u[text()='" + collector + "'] ]

This finds you only the single row you need with a single command.

If you rather want to stick with your current solution, try:

String rowsXpath = "id('CollectorQoSPerformanceMetricsgrid')//div[contains(@class, 'x-grid3-row x-unselectable-single')]";
List<WebElement> rows = driver.findElements(By.xpath(rowsXpath));
boolean foundCollector = false;
for(WebElement row : rows) {
    if(!row.findElements(By.xpath(".//u[text()='" + collector + "']")).isEmpty()) {
        foundCollector = true;
        break;
    }
}

You have to add your dependencies to the classpath when you run your program:

java -cp "selenium-java.jar:..." -jar xyz-selenium-test-1.0.jar

Maven also allows you to run a Main class with all the required dependencies in the classpath (see option 1 in the previous link).

Otherwise you can create a Jar with dependencies, which will contain everything you need to run your code:

<plugin>
  <artifactId>maven-assembly-plugin</artifactId>
  <configuration>
    <archive>
      <manifest>
        <mainClass>com.setup.test.Setup</mainClass>
      </manifest>
    </archive>
    <descriptorRefs>
      <descriptorRef>jar-with-dependencies</descriptorRef>
    </descriptorRefs>
  </configuration>
  <executions>
    <execution>
      <id>make-assembly</id>
      <phase>package</phase>
      <goals>
        <goal>single</goal>
      </goals>
    </execution>
  </executions>
</plugin>

and run

java -jar xyz-selenium-test-jar-with-dependencies-1.0.jar

This can actually be easily done.

The idea is to get access to the WebDriver instance and run the JavaScript on it (if it supports it). Then there's a lot of validating, because we need to make sure we only return what we promised.

The ByJavaScript class itself will look like this:

public class ByJavaScript extends By implements Serializable {
    private final String script;

    public ByJavaScript(String script) {
        checkNotNull(script, "Cannot find elements with a null JavaScript expression.");
        this.script = script;
    }

    @Override
    public List<WebElement> findElements(SearchContext context) {
        JavascriptExecutor js = getJavascriptExecutorFromSearchContext(context);

        // call the JS, inspect and validate response
        Object response = js.executeScript(script);
        List<WebElement> elements = getElementListFromJsResponse(response);

        // filter out the elements that aren't descendants of the context node
        if (context instanceof WebElement) {
            filterOutElementsWithoutCommonAncestor(elements, (WebElement)context);
        }

        return elements;
    }

    private static JavascriptExecutor getJavascriptExecutorFromSearchContext(SearchContext context) {
        if (context instanceof JavascriptExecutor) {
            // context is most likely the whole WebDriver
            return (JavascriptExecutor)context;
        }
        if (context instanceof WrapsDriver) {
            // context is most likely some WebElement
            WebDriver driver = ((WrapsDriver)context).getWrappedDriver();
            checkState(driver instanceof JavascriptExecutor, "This WebDriver doesn't support JavaScript.");
            return (JavascriptExecutor)driver;
        }
        throw new IllegalStateException("We can't invoke JavaScript from this context.");
    }

    @SuppressWarnings("unchecked")  // cast thoroughly checked
    private static List<WebElement> getElementListFromJsResponse(Object response) {
        if (response == null) {
            // no element found
            return Lists.newArrayList();
        }
        if (response instanceof WebElement) {
            // a single element found
            return Lists.newArrayList((WebElement)response);
        }
        if (response instanceof List) {
            // found multiple things, check whether every one of them is a WebElement
            checkArgument(
                    Iterables.all((List<?>)response, Predicates.instanceOf(WebElement.class)),
                    "The JavaScript query returned something that isn't a WebElement.");
            return (List<WebElement>)response;  // cast is checked as far as we can tell
        }
        throw new IllegalArgumentException("The JavaScript query returned something that isn't a WebElement.");
    }

    private static void filterOutElementsWithoutCommonAncestor(List<WebElement> elements, WebElement ancestor) {
        for (Iterator<WebElement> iter = elements.iterator(); iter.hasNext(); ) {
            WebElement elem = iter.next();

            // iterate over ancestors
            while (!elem.equals(ancestor) && !elem.getTagName().equals("html")) {
                elem = elem.findElement(By.xpath("./.."));
            }

            if (!elem.equals(ancestor)) {
                iter.remove();
            }
        }
    }

    @Override
    public String toString() {
          return "By.javaScript: \"" + script + "\"";
    }

}

^{This code uses the Google Guava library. It is a dependency of Selenium, so you should have it on your classpath. But if there's something you don't understand, look into Guava.}

Things to consider:

1. Document the whole thing.
2. Use better and more helpful exceptions. Consider some custom subclasses of WebDriverException. Also add more helpful messages and info.
3. Restrict the class' visibility to package. Or embed it into a static factory (as seen in the original By class) so that it won't be accessible directly etc.
4. Write tests. I have tried the most obvious usages (element can't be found, search from driver, search from some context) and everything seems to be ok, but I didn't test it extensively.

Usage:

WebElement elem = driver.findElement(new ByJavaScript("return document.querySelector('.haha');"));

Now, the original By class is a static factory that gives out various implementations of itself. Unfortunately, we can't add a new static method to it (without changing its source), so we won't be able to type By.javascript("return something;"). We have to create our own static factory to get something similar:

public class MyBy {
    /**
     * Returns a {@code By} which locates elements by the JavaScript expression passed to it.
     * 
     * @param script The JavaScript expression to run and whose result to return
     */
    public static By javascript(String script) {
        return new ByJavaScript(script);
    }
}

Usage:

WebElement elem = driver.findElement(MyBy.javascript("return document.querySelector('.haha');"));