[java] Best way to check that element is not present using Selenium WebDriver with java

Im trying the code below but it seems it does not work... Can someone show me the best way to do this?

public void verifyThatCommentDeleted(final String text) throws Exception {
    new WebDriverWait(driver, 5).until(new ExpectedCondition<Boolean>() {
            @Override
            public Boolean apply(WebDriver input) {
                try {
                    input.findElement(By.xpath(String.format(
                            Locators.CHECK_TEXT_IN_FIRST_STATUS_BOX, text)));
                    return false;
                } catch (NoSuchElementException e) {
                    return true;
                }
            }
        });
    }

int i=1;

while (true) {
  WebElementdisplay=driver.findElement(By.id("__bar"+i+"-btnGo"));
  System.out.println(display);

  if (display.isDisplayed()==true)
  { 
    System.out.println("inside if statement"+i);
    driver.findElement(By.id("__bar"+i+"-btnGo")).click();
    break;
  }
  else
  {
    System.out.println("inside else statement"+ i);
    i=i+1;
  }
}

    WebElement element = driver.findElement(locator);

    Assert.assertFalse(element.isDisplayed());

The assertion will pass if the element is not present, otherwise it will fail.

WebElement element = driver.findElement(locator);
Assert.assertNull(element);

The above assertion will pass if element is not present.

Use findElements instead of findElement.

findElements will return an empty list if no matching elements are found instead of an exception. Also, we can make sure that the element is present or not.

Ex: List elements = driver.findElements(By.yourlocatorstrategy);

if(elements.size()>0){
    do this..
 } else {
    do that..
 }

In Python for assertion I use:

assert len(driver.find_elements_by_css_selector("your_css_selector")) == 0

Unable to comment to The Meteor Test Manual, since I have no rep, but I wanted to provide an example that took me quite awhile to figure out:

Assert.assertEquals(0, wd.findElements(By.locator("locator")).size());

This assertion verifies that there are no matching elements in the DOM and returns the value of Zero, so the assertion passes when the element is not present. Also it would fail if it was present.

public boolean isDisplayed(WebElement element) {
        try {
            return element.isDisplayed();
        } catch (NoSuchElementException e) {
            return false;
        }
    }

If you wan t to check that element is displayed on the page your check should be:

if(isDisplayed(yourElement){
...
}
else{
...
}

Instead of doing findElement, do findElements and check the length of the returned elements is 0. This is how I'm doing using WebdriverJS and I expect the same will work in Java