TextFlow값이 null값이 나는 이유가 뭔가요

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package com.y_fi.chat.main; import java.net.URL;import java.rmi.NotBoundException;import java.rmi.RemoteException;import java.rmi.registry.LocateRegistry;import java.rmi.registry.Registry;import java.rmi.server.UnicastRemoteObject;import java.util.ResourceBundle; import com.y_fi.chat.service.IChatClientService;import com.y_fi.chat.service.IChatServerService;import com.y_fi.member.vo.MemberVO; import javafx.event.ActionEvent;import javafx.fxml.FXML;import javafx.geometry.Pos;import javafx.scene.control.Button;import javafx.scene.control.Label;import javafx.scene.control.ScrollPane;import javafx.scene.control.TextField;import javafx.scene.image.Image;import javafx.scene.image.ImageView;import javafx.scene.layout.HBox;import javafx.scene.layout.VBox;import javafx.scene.text.Text;import javafx.scene.text.TextFlow; public class ChatMainController extends UnicastRemoteObject implements IChatClientService{ /** * */ private static final long serialVersionUID &#61; 1L; private IChatServerService serverChat; private IChatClientService client; private MemberVO vo; public ChatMainController() throws RemoteException { super(); // TODO Auto-generated constructor stub } String receiveMsg; &#64;FXML private ResourceBundle resources; &#64;FXML private URL location; &#64;FXML private Label roomName; &#64;FXML private ScrollPane pane; &#64;FXML private VBox viewChat; &#64;FXML private ImageView btnMore; &#64;FXML private TextField tfMsg; &#64;FXML private Button btnSend; &#64;FXML void btnSendClick(ActionEvent event) { HBox hbox &#61; new HBox(); VBox vbox &#61; new VBox(); String msg &#61; tfMsg.getText(); TextFlow tf &#61; new TextFlow(new Text(msg)); Label img &#61; new Label(&#34;img&#34;); Label nick &#61; new Label(&#34;nick&#34;); vbox.getChildren().addAll(nick,img); hbox.getChildren().addAll(tf,vbox); hbox.setAlignment(Pos.CENTER_RIGHT); viewChat.getChildren().add(hbox); tfMsg.clear(); try { serverChat.setMessage(msg); } catch (RemoteException e) { // TODO Auto-generated catch block e.printStackTrace(); } } &#64;Override public void showMessage(String msg) throws RemoteException {// System.out.println(msg); HBox hbox &#61; new HBox(); VBox vbox &#61; new VBox(); TextFlow tf &#61; new TextFlow(new Text(msg)); Label img &#61; new Label(&#34;img&#34;); Label nick &#61; new Label(&#34;nick&#34;); vbox.getChildren().addAll(nick,img); hbox.getChildren().addAll(tf,vbox); hbox.setAlignment(Pos.CENTER_LEFT); viewChat.getChildren().add(hbox); } &#64;FXML void initialize() { assert roomName !&#61; null : &#34;fx:id&#61;\&#34;roomName\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; assert pane !&#61; null : &#34;fx:id&#61;\&#34;pane\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; assert viewChat !&#61; null : &#34;fx:id&#61;\&#34;viewChat\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; assert btnMore !&#61; null : &#34;fx:id&#61;\&#34;btnMore\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; assert tfMsg !&#61; null : &#34;fx:id&#61;\&#34;tfMsg\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; assert btnSend !&#61; null : &#34;fx:id&#61;\&#34;btnSend\&#34; was not injected: check your FXML file 'ChatMain.fxml'.&#34;; try { client &#61; new ChatMainController(); } catch (RemoteException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { Registry reg &#61; LocateRegistry.getRegistry(&#34;localhost&#34;, 7545); serverChat &#61; (IChatServerService) reg.lookup(&#34;chat&#34;); serverChat.setClient(client); } catch (RemoteException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NotBoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } // viewChat &#61; new VBox(); } }btnSendClick()메서드부분은 fx에서 잘 구현이되는데 똑같이 showMessage() 메서드 부분에서 같은 구문을 실행하면 TextFlow부분이 Null값이 되는데 왜 NULL값이 되는건가요?

TextFlow값이 null값이 나는 이유가 뭔가요

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