JavaFX FXML controller - constructor vs initialize method
<p>My <code>Application</code> class looks like this:</p>

<pre><code>public class Test extends Application {

    private static Logger logger = LogManager.getRootLogger();

    @Override
    public void start(Stage primaryStage) throws Exception {

        String resourcePath = "/resources/fxml/MainView.fxml";
        URL location = getClass().getResource(resourcePath);
        FXMLLoader fxmlLoader = new FXMLLoader(location);

        Scene scene = new Scene(fxmlLoader.load(), 500, 500);

        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}
</code></pre>

<p>The <code>FXMLLoader</code> creates an instance of the corresponding controller (given in the <code>FXML</code> file via <code>fx:controller</code>) by invoking first the default constructor and then the <code>initialize</code> method:</p>

<pre><code>public class MainViewController {

    public MainViewController() {
        System.out.println("first");
    }

    @FXML
    public void initialize() {
        System.out.println("second");
    }
}
</code></pre>

<p>The output is:</p>

<pre><code>first
second
</code></pre>

<p>So, why does the <code>initialize</code> method exist? What is the difference between using a constructor or the <code>initialize</code> method to initialize the controller required things?</p>

<p>Thanks for your suggestions!</p>