컨트롤러의 메인 클래스에서 스테이지를 사용할 수 없습니다.

Question

JavaFX를 사용하여 스크린 레코더를 만들려고합니다. 나는 하나를 만드는 방법을 찾고 있었는데, this 기사를 보았을 때, 나는 그것을 시험해 보았고 정말 좋아했다. 그래서 제공된 코드로 JavaFX FXML 애플리케이션을 만들기로 결정했다.

@FXML 
void startOnAction(ActionEvent event) { 
    FXMLDocumentController FXML = new FXMLDocumentController(); 
    FXML.console.setText("######### Starting Screen Recorder #########"); 
    try { 
     Thread.sleep(250); 
    } catch (InterruptedException ex) { 
    } 
    Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); 
    FXML.console.appendText("Your Screen [Width, Height]: " + "[" + screen.getWidth() + "," + screen.getHeight() + "]\nWhen the Recording starts, this window will minimize, to stop them recording, open this window."); 
    try { 
     Thread.sleep(1000); 
    } catch (InterruptedException ex) { 
    } 
    FXML.console.appendText("The recording will start in 5 seconds"); 
    int num = 5; 
    for (int i = 0; i <= 5; i++) { 
     System.out.print(num); 
     try { 
      Thread.sleep(1000); 
     } catch (InterruptedException ex) { 
     } 
     num = num - 1; 
    } 
    FXML.console.appendText("Start!"); 
    File f = new File(store); 
    if (!f.exists()) { 
     f.mkdir(); 
    } 
    startRecord(); 
    Recorder R = new Recorder(); 
    R.stage.setIconified(true); 
    R.stage.focusedProperty().addListener((ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) -> { 
     focusState(newValue); 
    }); 
} 

이는 FXMLDocumentController의 방법이다, 나는 '콘솔'밖으로 인쇄 내가 그것을 인쇄 할 텍스트의 변수로 내 텍스트 영역을 만들고 싶어.

그러나 내가 사용하는 모든 라인은이 FXMLDocumentController FXML = new FXMLDocumentController();과 Recorder R = new Recorder(); 에 오류가 있습니다.

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException 
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774) 
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657) 
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49) 
    at javafx.event.Event.fireEvent(Event.java:198) 
    at javafx.scene.Node.fireEvent(Node.java:8413) 
    at javafx.scene.control.Button.fire(Button.java:185) 
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182) 
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96) 
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89) 
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218) 
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
    at javafx.event.Event.fireEvent(Event.java:198) 
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3757) 
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485) 
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762) 
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:416) 
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415) 
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555) 
    at com.sun.glass.ui.View.notifyMouse(View.java:937) 
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
    at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) 
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) 
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769) 
    ... 48 more 
Caused by: java.lang.NullPointerException 
    at recorder.FXMLDocumentController.startOnAction(FXMLDocumentController.java:127) 
    ... 58 more 

Line 127 is `Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException 
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774) 
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657) 
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49) 
    at javafx.event.Event.fireEvent(Event.java:198) 
    at javafx.scene.Node.fireEvent(Node.java:8413) 
    at javafx.scene.control.Button.fire(Button.java:185) 
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182) 
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96) 
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89) 
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218) 
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
    at javafx.event.Event.fireEvent(Event.java:198) 
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3757) 
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485) 
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762) 
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:416) 
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) 
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415) 
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555) 
    at com.sun.glass.ui.View.notifyMouse(View.java:937) 
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
    at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) 
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) 
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769) 
    ... 48 more 
Caused by: java.lang.NullPointerException 
    at recorder.FXMLDocumentController.startOnAction(FXMLDocumentController.java:127) 
    ... 58 more` 

라인 (127) 내가 위에서 게시 된 코드,이 라인 4 : 여기

는 오류입니다.

전체 코드 아래

---

...

Main 클래스 :

package recorder; 

import javafx.application.Application; 
import static javafx.application.Application.launch; 
import javafx.fxml.FXMLLoader; 
import javafx.scene.Parent; 
import javafx.scene.Scene; 
import javafx.stage.Stage; 

public class Recorder extends Application { 

    public Stage stage; 

    @Override 
    public void start(Stage stage) throws Exception { 
     Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml")); 

     Scene scene = new Scene(root); 
     stage.setResizable(false); 
     stage.setScene(scene); 
     stage.show(); 
    } 

    public static void main(String[] args) { 
     launch(args); 
    } 

} 

FXML 문서 (코드 싹둑가 출신)

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

<?import javafx.scene.control.Button?> 
<?import javafx.scene.control.TextArea?> 
<?import javafx.scene.control.TextField?> 
<?import javafx.scene.layout.ColumnConstraints?> 
<?import javafx.scene.layout.GridPane?> 
<?import javafx.scene.layout.RowConstraints?> 

<GridPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="639.0" prefWidth="578.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="recorder.FXMLDocumentController"> 
    <columnConstraints> 
     <ColumnConstraints hgrow="SOMETIMES" minWidth="578.0" prefWidth="578.0" /> 
    </columnConstraints> 
    <rowConstraints> 
     <RowConstraints maxHeight="1.7976931348623157E308" minHeight="10.0" prefHeight="95.0" vgrow="SOMETIMES" /> 
     <RowConstraints maxHeight="245.0" minHeight="9.0" prefHeight="12.0" vgrow="SOMETIMES" /> 
     <RowConstraints maxHeight="481.0" minHeight="10.0" prefHeight="478.0" vgrow="SOMETIMES" /> 
    </rowConstraints> 
    <children> 
     <Button fx:id="start" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" onAction="#startOnAction" prefHeight="220.0" prefWidth="578.0" text="Start Recording" /> 
     <TextArea fx:id="console" editable="false" prefHeight="200.0" prefWidth="200.0" promptText="Console" wrapText="true" GridPane.rowIndex="2" /> 
     <TextField fx:id="input" prefHeight="105.0" prefWidth="578.0" promptText="File Name" GridPane.rowIndex="1" /> 
    </children> 
</GridPane> 

FXMLDocumentController :

package recorder; 

import java.awt.Dimension; 
import java.awt.Rectangle; 
import java.awt.Robot; 
import java.awt.Toolkit; 
import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.OutputStream; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.util.ResourceBundle; 
import java.util.Vector; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javafx.beans.value.ObservableValue; 
import javafx.event.ActionEvent; 
import javafx.fxml.FXML; 
import javafx.fxml.Initializable; 
import javafx.scene.control.Button; 
import javafx.scene.control.TextArea; 
import javafx.scene.control.TextField; 
import javax.imageio.ImageIO; 
import javax.media.MediaLocator; 
import javax.swing.JOptionPane; 

public class FXMLDocumentController implements Initializable { 

    File file; 
    /** 
    * Screen Width. 
    */ 
    public static int screenWidth = (int) Toolkit.getDefaultToolkit() 
      .getScreenSize().getWidth(); 

    /** 
    * Screen Height. 
    */ 
    public static int screenHeight = (int) Toolkit.getDefaultToolkit() 
      .getScreenSize().getHeight(); 

    /** 
    * Interval between which the image needs to be captured. 
    */ 
    public static int captureInterval = 50; 

    /** 
    * Temporary folder to store the screenshot. 
    */ 
    public static String store = "tmp"; 

    /** 
    * Status of the recorder. 
    */ 
    public static boolean record = false; 

    @FXML 
    private Button start; 

    @FXML 
    private TextArea console; 

    @FXML 
    private TextField input; 

    public static void startRecord() { 
     Thread recordThread = new Thread() { 
      @Override 
      public void run() { 
       Robot rt; 
       int cnt = 0; 
       try { 
        rt = new Robot(); 
        while (cnt == 0 || record) { 
         BufferedImage img = rt.createScreenCapture(new Rectangle(screenWidth, screenHeight)); 
         ImageIO.write(img, "jpeg", new File("./" + store + "/" 
           + System.currentTimeMillis() + ".jpeg")); 
         if (cnt == 0) { 
          record = true; 
          cnt = 1; 
         } 
         Thread.sleep(captureInterval); 
        } 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
      } 
     }; 
     recordThread.start(); 
    } 

    /** 
    * @throws MalformedURLException 
    * 
    */ 
    public static void makeVideo(String movFile) throws MalformedURLException { 
     FXMLDocumentController FXML = new FXMLDocumentController(); 
     FXML.console.appendText("Processing Video... please wait"); 
     JpegImagesToMovie imageToMovie = new JpegImagesToMovie(); 
     Vector<String> imgLst = new Vector<String>(); 
     File f = new File(store); 
     File[] fileLst = f.listFiles(); 
     for (int i = 0; i < fileLst.length; i++) { 
      imgLst.add(fileLst[i].getAbsolutePath()); 
     } 
     // Generate the output media locators. 
     MediaLocator oml; 
     if ((oml = imageToMovie.createMediaLocator(movFile)) == null) { 
      FXML.console.appendText("Error in processing"); 
      System.exit(0); 
     } 
     imageToMovie.doIt(screenWidth, screenHeight, (1000/captureInterval), imgLst, oml); 

    } 

    @FXML 
    void setOnAction(ActionEvent event) { 
     String path = JOptionPane.showInputDialog("Type in the File Path", "C:/Users/" + System.getProperty("user.name") + "/Desktop"); 
     file = new File(path); 
    } 

    @FXML 
    void startOnAction(ActionEvent event) { 
     FXMLDocumentController FXML = new FXMLDocumentController(); 
     FXML.console.setText("######### Starting Screen Recorder #########"); 
     try { 
      Thread.sleep(250); 
     } catch (InterruptedException ex) { 
     } 
     Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); 
     FXML.console.appendText("Your Screen [Width, Height]: " + "[" + screen.getWidth() + "," + screen.getHeight() + "]\nWhen the Recording starts, this window will minimize, to stop them recording, open this window."); 
     try { 
      Thread.sleep(1000); 
     } catch (InterruptedException ex) { 
     } 
     FXML.console.appendText("The recording will start in 5 seconds"); 
     int num = 5; 
     for (int i = 0; i <= 5; i++) { 
      System.out.print(num); 
      try { 
       Thread.sleep(1000); 
      } catch (InterruptedException ex) { 
      } 
      num = num - 1; 
     } 
     FXML.console.appendText("Start!"); 
     File f = new File(store); 
     if (!f.exists()) { 
      f.mkdir(); 
     } 
     startRecord(); 
     Recorder R = new Recorder(); 
     R.stage.setIconified(true); 
     R.stage.focusedProperty().addListener((ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) -> { 
      focusState(newValue); 
     }); 
    } 

    ; 

    private void focusState(boolean value) { 
     if (value) { 
      System.out.println("Focus Gained"); 
      record = false; 
      try { 
       makeVideo(input.getText() + ".mov"); 
      } catch (MalformedURLException ex) { 
      } 
     } else { 
     } 
    } 

    @Override 
    public void initialize(URL url, ResourceBundle rb) { 

    } 

} 

본인의 지침 및 내용을 올바르게 준수하기 바랍니다.

Answer 1

FXMLLoader으로로드 된 fxml에 연결되어 있지 않은 FXMLDocumentController의 인스턴스를 만들면됩니다.

그러나 그 필드 값의 주입을 담당 할 FXMLLoader의 상기 fxml 파일이로드 될 때 단지 FXMLLoader 사용할 컨트롤러 클래스의 인스턴스 필드를 삽입 않는다 (즉, fx:controller에 기초 FXMLLoader 자체에 의해 생성 된 어느 하나 애트리뷰트 또는 setController을 사용하여 제공되는 애트리뷰트이거나 두 경우 모두 load을 호출 한 직후에 FXMLLoader.getController을 사용하여 인스턴스를 검색 할 수 있습니다.

수정되지 않은 필드의 기본값은 null이며 NPE가 기본값으로 사용됩니다. 여기 :

FXMLDocumentController FXML = new FXMLDocumentController(); 
FXML.console.setText("######### Starting Screen Recorder #########"); 

---

this.console.setText("######### Starting Screen Recorder #########"); 

아마 성공하지만,이 시간 동안 응용 프로그램 동결을 만들 것입니다 몇 초 동안 Thread.sleep, 당신의 코드에서 응용 프로그램 스레드를 차단하고 있습니다 것입니다 ...

장면이 그것에 추가 한 후

---

는 대신 현장 내부 Node를 사용할 수 있으며, Window을 검색하려면 다음

Stage stage = (Stage) this.console.getScene().getWindow(); 
stage.setIconified(true); 
stage.focusedProperty()...