Fxmlloader load ошибка

• We write an XML declaration by describing the version and encoding.

• Import all the necessary Java types in FXML.

• We use the AnchorPane tag to declare the fx namespace prefix. This tag permits the child nodes’ edges to be anchored to the offset from an edge of the anchor pane.

  If there is padding or border in the anchor pane, then the offsets would be measured from those insets’ inside edges. The AnchorPane tag has various properties listed below with a brief explanation.

  • The prefHeight and prefWidth properties can be used to override the region’s computed preferred height and width.

  • In FXML, the fx:controller is used to specify the controller on a root element. Remember that we are allowed to have one controller per FXML document and must be specified on the root element.

    What is the root element in this code? The AchnorPane tag is the root element for this code example which is a top-level object in an object graph of the FXML document.

    All the UI elements will be added to this element. Further, we also need to know the rules a controller must satisfy; these rules are listed below:

    • A controller is instantiated by the FXML loader.
    • A controller must have the public no-args constructor. The FXML loader would be unable to instantiate it if it is not there, resulting in an exception at load time.
    • A controller can contain accessible functions that can also be specified as the event handlers in the FXML.
    • The FXML controller automatically looks for a controller’s accessible instance variable(s). If the accessible instance variable’s name matches an element’s fx:id attribute, an object reference from the FXML will automatically be copied into a controller instance variable.

    This feature will make UI elements’ references in the FXML accessible to the controller. Then, the controller would be able to use them.

  • A controller can also access the initialize() function, which must not accept arguments and return the void type. Once the FXML document’s loading process is complete, the FXML loader calls the initialize() function.

• In FXML, the layout panes contain the children as their child elements. Considering the project requirements, we can add labels, buttons, and other elements.

//Step 1: replace this package name with your package name
package com.mycompany.javafx_fxml_loadexception;

//Step 2: import necessary libraries
import javafx.fxml.FXML;
import javafx.scene.control.Button;

// Step 3: viewController class
public class viewController {

    //define button
    @FXML
    private Button btTest;

    //define the action when the button is clicked
    @FXML
    public void onBtTestAction() {
        System.out.println("CLICK");
    }//end onBtTestAction method

}//end viewController class

//Step 1: replace the package name with your package name
package com.mycompany.javafx_fxml_loadexception;

//Step 2: import necessary libraries
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

//Step 3: primary launch class extending the Application class
public class App extends Application {

    /**
     *
     * @param stage
     */
    @Override
    public void start(Stage stage) {
        //load the view.fxml file, add it to the scene and show it
        try {
            Parent parent = FXMLLoader.load(getClass().getResource("/fxml/view.fxml"));
            //create a scene
            Scene scene = new Scene(parent);
            //set scene to a stage
            stage.setScene(scene);
            //show the stage
            stage.show();
        }//end try
        catch (IOException e) {
            e.printStackTrace();
        }//end catch
    }//end start method

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

}//end App class

package sample;

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

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        //Parent root = FXMLLoader.load(getClass().getResource("/fxml/main.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root, 300, 275));
        primaryStage.show();
    }


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

package sample;

public class Controller {
}

<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<GridPane fx:controller="sample.Controller"
          xmlns:fx="http://javafx.com/fxml" alignment="center" hgap="10" vgap="10">
</GridPane>

"C:Program FilesJavajdk-12binjava.exe" "--module-path=C:Program FilesJavajavafx-sdk-11.0.2lib--add-modules=javafx.controls" --add-modules javafx.base,javafx.graphics --add-reads javafx.base=ALL-UNNAMED --add-reads javafx.graphics=ALL-UNNAMED "-javaagent:C:Program FilesJetBrainsIntelliJ IDEA Community Edition 2019.1libidea_rt.jar=63514:C:Program FilesJetBrainsIntelliJ IDEA Community Edition 2019.1bin" -Dfile.encoding=UTF-8 -classpath "C:UsersdpozhDesktopJAVAJAVA-KODlesson16outproductionlesson16;C:Program FilesJavajavafx-sdk-11.0.2libsrc.zip;C:Program FilesJavajavafx-sdk-11.0.2libjavafx-swt.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.web.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.base.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.fxml.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.media.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.swing.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.controls.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.graphics.jar" -p "C:Program FilesJavajavafx-sdk-11.0.2libjavafx.base.jar;C:Program FilesJavajavafx-sdk-11.0.2libjavafx.graphics.jar" sample.Main
Exception in Application start method
java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
	at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module @0x7f1029bf) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module @0x7f1029bf
	at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
	at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
	at sample.Main.start(Main.java:13)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	... 1 more
Exception running application sample.Main

Process finished with exit code 1

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--module-path "C:Program FilesJavajavafx-sdk-11.0.2lib" --add-modules javafx.controls,javafx.fxml,javafx.base,javafx.graphics,javafx.web --add-exports javafx.graphics/com.sun.javafx.sg.prism=ALL-UNNAMED

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java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
	at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module @0x36cbb069) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module @0x36cbb069
	at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
	at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2056)
	at app.Main.start(Main.java:24)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	... 1 more
Exception running application app.Main

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>groupId</groupId>
    <artifactId>Pere</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.3</version>
                <configuration>
                    <mainClass>org.openjfx.App</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>12.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>12.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-graphics</artifactId>
            <version>12.0.2</version>
        </dependency>
    </dependencies>



</project>