title: JavaFX: Best practice for navigating between UI screens
body: <p>I want to change UI screens from <code>login.fxml</code> to <code>home.fxml</code>. </p>
  
  <p>Should I change the <code>Stage</code> or the <code>Scene</code>? I'm not sure which is the best practice?
  Also, can I use a lambda expression for the handler in the controller?</p>