What is Fluent Wait in Selenium WebDriver? (Interview Question #16)

[@sunil100r]

This is the best explanation of Webdriver wait and Fluent wait that I have seen. One question is polling 7 or 4 times it doesn't matter right but finally it's waiting for 3 seconds. What is the difference?

[@QAFox]

Fluent Wait is an advanced version of Webdriver Wait, which provides an extra customization in polling time. Other than that there is no difference. In real time, hence we use WebDriver Wait for explicit wait.

[@miral-mamun6145]

Class WebDriverWait is a disciplined child (Specialization) of Class FluentWait and grand child of interface Wait. In short, Class FluentWait implements Wait interface and WebDriverWait extends FluentWait. So there are many things common in WebDriverWait and FluentWait instances such as :- You can set polling interval in both instances. You can ignore any exceptions in both instances. You can use ExpectedConditions methods in both instances. You can override apply() method in both instances. If they are common then why WebDriverWait is given? We could have used FluentWait itself. But the major difference between them is that WebDriverWait is a specialization of FluentWait which uses WebDriver instance and this class have added specific mechanism related to WebDriver. That's why it ignores instances of NotFoundException by default. In case of FluentWait, If you need to ignore any exception in FluentWait instance, you need to mention it explicitly.

[@shankarprasad2454]

Excellent simple and precise!

[@QAFox]

Thank you :)

[@reshmapn7941]

It's very clear and concise explanation sir Thank you

[@QAFox]

Welcome Reshma :)

[@pujasaha5452]

Best explanation ..great work 👌

[@QAFox]

Thank you :)

[@swapnil3835]

Explanation is awesome ... Thank u sir

[@QAFox]

Welcome :)

[@anygamer2792]

Sir how we can write fluent wait for framework level Eg, where ever required fluent wait we can simply call that function. Can you tell. Me how to do that?

[@sasireka7974]

Sir,mostly in our project which wait is used fluent or explicit

[@QAFox]

Explicit WebDriverWait is used in projects.

[@miral-mamun6145]

WebDriverWait is a ready to use class for WebDriver. WebDriverWait can not be used for a non-selenium waiting condition while FluentWait can be used.

[@udayshankar385]

Your Explanation is good ! but you know even you can override default polling time of WebdriverWait. like this: WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(30)); wait.pollingEvery(Duration.ofSeconds(2)); because at 14:29 you said that you can not customize default polling time of WebDriverWait, which is not true .

[@QAFox]

Earlier while recording the video, I didn't know that. But later I got to know. Will create a video on this soon.

[@udayshankar385]

@@QAFox Thank you!

[@QAFox]

@@udayshankar385 Welcome :)

[@kiranbarhate2118]

Where to find the interview question and answer notes

[@QAFox]

In the description of the videos.

[@miral-mamun6145]

FluentWait allows to set polling interval while WebDriverWait does not. Fact - You can set in both after all WebDriverWait extends FluentWait and all configurable methods are public in FluentWait. We can not use conditions defined in class ExpectedConditions in FluentWait instance and override apply method in WebDriverWait instance. Fact - You can use any one in any instance. WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(30)); // Check for condition in every 2 seconds and overriding default interval 500 MS wait.pollingEvery(Duration.ofSeconds(2));

[@revathikamaraj6650]

These 2 lines are not working in selenium 4.11.0 WebDriverWait wait = new WebDriverWait(driver,Duration.ofSeconds(10)); FluentWait wait = new FluentWait(driver).withTimeout(Duration.ofSeconds(35)).pollingEvery(Duration.ofSeconds(10)); and also, wait.until(ExpectedConditions.visibilityOf(e)); Can anyone help me to handle this? Please