<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.*?>
<?import javafx.geometry.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>

<HBox alignment="CENTER_RIGHT" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="41.0" prefWidth="872.0" spacing="10.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.maxifly.GUI.StatusBar">
   <padding>
      <Insets bottom="5.0" left="10.0" right="10.0" top="5.0" />
   </padding>
   <children>
      <Label fx:id="userlogin" prefHeight="21.0" prefWidth="263.0" text="login:" />
   </children>
</HBox>

package com.maxifly.GUI;

import javafx.fxml.FXML;
import javafx.scene.control.Label;


public class StatusBar {
    @FXML private Label userlogin;

    public void setLogin(String login){
        if (login == null) {
            this.userlogin.setText("login:");
        } else {
            this.userlogin.setText("login: " + login);
        }
    }
}

        BorderPane root = new BorderPane();
HBox hBox_statusbar = FXMLLoader.load(Factory_GUI.class.getResource("StatusBar.fxml"));
root.setBottom(hBox_statusbar);
Scene scene = new Scene(root, 400, 250);

StatusBar statusBar = new StatusBar();
statusBar.setLogin("kuku");