title: Javafx ListView update dynamically
body: <p>I am creating a Chat application with JavaFx. My friend list is loaded into a ListView. My requirement is to show a notification icon when the user receives a message from a friend. For that I need to know the cell in which the friend is and also I need to show the notification icon. I cannot figure out a way to do this as I;m very new to FX. 
  Any help would be appreciated.</p>
  
  <p><a href="https://i.stack.imgur.com/rC4TF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rC4TF.png" alt="enter image description here"></a>
  Thank you</p>