A great blogpost about JavaFx Event Handlers and Change Listeners

If your using JavaFx and want an informative and well written tutorial on how to use Event Handers and Change Listeners, this post by Marco Jakob is great.

Here is an example I wrote of how to use it when listening out for what a user is typing in a TextField

public class MysteriousCaveDoor  extends AnchorPane
{
   @FXML
   private TextField txtEnterSecretPhrase;
   
   public MysteriousCaveDoor
   {
          txtTitle.textProperty().addListener(new ChangeListener<String>() {
      @Override
      public void changed(ObservableValue<extends String> observableValue, String s, String s2) {
         //think of s2 as "newValue" in the Code.Makery Tutorial
         if(s2.contains("open sesame"))
            openTheCaveDoors(...);
         }
      });
   }
}