Avoid explicit delay in selenium

If you are using java with selenium for automation,then you should use explicit delay in your code(like Thread.sleep(2000)).

Here is an example for same:

WebDriverWait wait = new WebDriverWait(webDriver, 5);//here 5 is a maximum waiting time in seconds
wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//*[@value='SignIn']")));

//ExpectedConditions have lot of functions for different actions,so use these functions according your requirement.