title: JavaFX doesn't work on Heroku (NoClassDefFoundError)
body: <p>I have some JavaFX includes in my tomcat server application, like a javafx pair, and some properties, but it seems that they cause an error on heroku:</p>
  
  <blockquote>
    <p>java.lang.NoClassDefFoundError: javafx/util/Pair</p>
  </blockquote>
  
  <p>I see that it installs openJDK 1.8 when deploying the war, so how come it doesn't find JavaFX?</p>