JavaFx Event argument type mismatch

javafx keyevent
java lang reflect invocationtargetexception javafx
exception in thread javafx application thread'' java lang nullpointerexception

I using JavaFx for first time and I encountered a problem with events. I built a form with SceneBuilder and I add an event on .fxml and controller but it's always return with:

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch

FirstScene.fxml:

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" styleClass="background" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="examlog.gui.FirstSceneController">
    <stylesheets>
        <URL value="@dark_style.css" />
    </stylesheets>
   <children>
      <TableView fx:id="firstScene_tableView" layoutX="30.0" layoutY="42.0" prefHeight="287.0" prefWidth="600.0" AnchorPane.bottomAnchor="71.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="42.0">
        <columns>
          <TableColumn text="C1" />
          <TableColumn prefWidth="70.0" text="C2" />
        </columns>
      </TableView>
      <Label layoutX="14.0" layoutY="14.0" text="Létrehozott munkafolyamatok:" />
      <Button fx:id="firstScene_newbutton" layoutX="522.0" layoutY="353.0" mnemonicParsing="false" onMouseClicked="#newButtonClick" text="ÚJ" />
   </children>
</AnchorPane>

FirstSceneController.java:

public class FirstSceneController implements Initializable {

    @FXML 
    private Button firstScene_newbutton;
    @FXML 
    private TableView firstScene_tableView;

    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {

    }

@FXML 
    private void newButtonClick(ActionEvent event) {
        System.out.println("You clicked me!");

    }



}

JavaFxApplication.java:

public class JavaFXApplication extends Application {

    private Stage stage;

    @Override
    public void start(Stage primaryStage) {
        this.stage = primaryStage;
        try {
            FirstScene();
            primaryStage.setTitle("FXML is Simple");
            primaryStage.show();
        } catch (IOException ex) {
            Logger.getLogger(JavaFXApplication.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    public void FirstScene() throws IOException {
        AnchorPane page = (AnchorPane) FXMLLoader.load(JavaFXApplication.class.getResource("FirstScene.fxml"));
        Scene scene = new Scene(page);
        stage.setScene(scene);

    }

}

Exception:

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch
    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:483)
    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:483)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1757)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1645)
    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:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3437)
    at javafx.scene.Scene$ClickGenerator.access$7900(Scene.java:3365)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3733)
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3452)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1728)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2461)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:348)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:273)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:382)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:553)
    at com.sun.glass.ui.View.notifyMouse(View.java:925)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$141(WinApplication.java:102)
    at com.sun.glass.ui.win.WinApplication$$Lambda$38/14271771.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)

I would really appreciate any help.


Use onAction="#newButtonClick", not onMouseClicked.

java.lang.IllegalArgumentException: argument type mismatch, This question already has an answer here: JavaFx Event argument type mismatch 2 answers i receive this error when i dop down a combobox, i use Javafx with� JavaFx Event argument type mismatch I using JavaFx for first time and I encountered a problem with events. I built a form with SceneBuilder and I add an event on .fxml and controller but it's always return with: Exception in thread "JavaFX Application Thread" java.lang.Illega


Try using KeyEvent instead of ActionEvent

@FXML
private void newButtonClick(KeyEvent event) { ...}

“JavaFX Application Thread” java.lang.IllegalArgumentException , I using JavaFx for first time and I encountered a problem with events. I built a form with SceneBuilder and I add an event on .fxml and controller but it's always� I am using JavaFx for first time and I'am encountered a problem with events. I'am built a form with SceneBuilder and I add an event on .fxml and controller but it's always return with: Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch FirstScene.fxml:


If you want to use a mouseClicked event, simply change your newButtonClicked method to take in MouseEvent

@FXML
private void newButtonClick(MouseEvent event){...}

JavaFx Event argument type mismatch, IllegalArgumentException: argument type mismatch at > sun.reflect. dispatchEvent(EventDispatchChainImpl.java:114) > at > com.sun.javafx.event. Now my b4j event sub worked BUT then failed. A click resulted in the desired sub executing successfully followed immediately by the sub being called again and this time a type mismatch exception - MouseEvent cannot be cast to Label.


instead of onMouseClicked you should use onAction

"JavaFX application Fil" java.lang.IllegalArgumentException , Thread" java.lang.IllegalArgumentException: argument type mismatch 3. ではなく ActionEvent @FXML private void newButtonClick(KeyEvent event) { }. The JavaFX User Interface Controls (UI Controls or just Controls) are specialized Nodes in the JavaFX Scenegraph especially suited for reuse in many different application contexts. javafx.scene.input Provides the set of classes for mouse and keyboard input event handling.


JavaFxイベントの引数型の不一致, JavaFx Event argument type mismatch. 由匿名(未验证) 提交于2019-12-03 01:18: 02. 可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请� Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch It appears the java engine is not finding the proper method. I'm very new to Java and even more to javafx.


JavaFx Event argument type mismatch, IllegalArgumentException: argument type mismatch after clicking into an TextField # processMouseEvent(Nifty.java:1559) at view.gui.event. This method takes the event type and the handler as arguments. In Example 4-1, the first handler is added to a single node and processes a specific event type. A second handler for handling input events is defined and registered by two different nodes.


java.lang.IllegalArgumentException: argument type mismatch after , KeyEvent cannot be converted to javafx.event.ActionEvent. Was This IllegalArgumentException: argument type mismatch. This post has been� An event represents an occurrence of something of interest to the application, such as a mouse being moved or a key being pressed. In JavaFX, an event is an instance of the javafx.event.Event class or any subclass of Event. JavaFX provides several events, including DragEvent, KeyEvent, MouseEvent, ScrollEvent, and others.