java fxml load exception

Question

i am doing following code. I want My Qwerty.fxml to display Show.fxml file on button click. Here is the code:

Qwerty.fxml

 <?xml version="1.0" encoding="UTF-8"?>
 <?import java.lang.*?>
 <?import java.util.*?>
 <?import javafx.scene.*?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320" xmlns:fx="http://javafx.com/fxml/1" fx:controller="qwerty.Qwerty">
<children>
 <Button layoutX="126" layoutY="90" text="Click Me!" onAction="#handleButtonAction" fx:id="button" />
 <Label layoutX="126" layoutY="120" minHeight="16" minWidth="69" fx:id="label" />
</children>
</AnchorPane>

Main.java

package qwerty;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.fxml.Initializable;
 import javafx.fxml.JavaFXBuilderFactory;
 import javafx.scene.Scene;
 import javafx.scene.layout.AnchorPane;
 import javafx.stage.Stage;
 public class Main extends Application {
private Stage stage;
private final double MINIMUM_WINDOW_WIDTH = 390.0;
private final double MINIMUM_WINDOW_HEIGHT = 500.0;
public static void main(String[] args) {
 Application.launch(Main.class, (java.lang.String[])null);
}
@Override
public void start(Stage primaryStage) {
 try {
 stage = primaryStage;
 stage.setTitle("FXML Login Sample");
 stage.setMinWidth(MINIMUM_WINDOW_WIDTH);
 stage.setMinHeight(MINIMUM_WINDOW_HEIGHT);
 gotoLogin();
 primaryStage.show();
 } catch (Exception ex) {
 Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
 }
}
 private void gotoLogin() {
 try {
 Qwerty login = (Qwerty) replaceSceneContent("Qwerty.fxml");
 login.setApp(this);
 } catch (Exception ex) {
 Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
 }
}
public void gotos() {
 try {
 ShowController login = (ShowController) replaceSceneContent("Show.fxml");
 login.setApp(this);
 } catch (Exception ex) {
 Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
 }
}
private Initializable replaceSceneContent(String fxml) {
 FXMLLoader loader = new FXMLLoader();
 InputStream in = Main.class.getResourceAsStream(fxml);
 loader.setBuilderFactory(new JavaFXBuilderFactory());
 loader.setLocation(Main.class.getResource(fxml));
 AnchorPane page = null;
 try {
 page = (AnchorPane) loader.load(in);
 }catch(Exception ex)
 {
 ex.printStackTrace();
 }
 finally {
 try {
 in.close();
 } catch (IOException ex) {
 Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
 }
 } 
 Scene scene = new Scene(page, 800, 600);
 stage.setScene(scene);
 stage.sizeToScene();
 return (Initializable) loader.getController();
}
}

Qwerty.java package qwerty;

import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
public class Qwerty extends AnchorPane implements Initializable {
private Main application;
public void setApp(Main application){
 this.application = application;
}
@FXML
private void handleButtonAction(ActionEvent event) {
application.gotos();
}
public void processLogin(ActionEvent event) {
}
@Override
public void initialize(URL url, ResourceBundle rb) {
 // TODO
} 
}

Show.fxml

 <?import java.lang.*?>
 <?import java.util.*?>
 <?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller=".ShowController" />

Exception generated

javafx.fxml.LoadException: 
file:/C:/Users/Administrator/Documents/NetBeansProjects/Qwerty/dist/run405710440/Qwerty.jar!/qwerty/Show.fxml:9
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2617)
at javafx.fxml.FXMLLoader.access700ドル(FXMLLoader.java:104)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:927)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:976)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:216)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:738)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2723)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3230)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3191)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3164)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3140)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3120)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3113)
at qwerty.Main.gotos(Main.java:65)
at qwerty.Qwerty.handleButtonAction(Qwerty.java:37)
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$MethodHandler.invoke(FXMLLoader.java:1763)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1651)
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:204)
at javafx.scene.Node.fireEvent(Node.java:8175)
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.BehaviorSkinBase1ドル.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase1ドル.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:204)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3746)
at javafx.scene.Scene$MouseHandler.access1800ドル(Scene.java:3471)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1695)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2486)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:314)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:345)
at com.sun.glass.ui.View.handleMouseEvent(View.java:526)
at com.sun.glass.ui.View.notifyMouse(View.java:898)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access300ドル(WinApplication.java:39)
at com.sun.glass.ui.win.WinApplication4ドル1ドル.run(WinApplication.java:112)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException: .ShowController
at java.net.URLClassLoader1ドル.run(URLClassLoader.java:372)
at java.net.URLClassLoader1ドル.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:925)
... 71 more

I am getting FXMl load exception. I am new to java and fxml. Please help

• Dmitry Ginzburg: What's the exact exception? Please, copy it here.

Answer 1

I had same error. You need to add the package_name to the below controller path

fx:controller=".ShowController"

this needs to be like this

fx:controller="package_name.ShowController"

Answer 2

The error says:

I cannot find a FXML controller named ".ShowController" which is defined in /qwerty/Show.fxml FXML file at line 9.

If Show.fxml has not any controller then delete fx:controller=".ShowController" from it.