Por qué no puedo iniciar un programa de JavaFX?

James Kolesar:

Tengo un pequeño problema con mi programa. Puedo ejecutar el programa con normalidad hasta que me dan mis etiquetas y acciones como "onclick" elementos ... Hay algún tipo de excepción que no puedo arreglar, así que estoy pidiendo su ayuda. ¿El problema es sólo en mi ordenador o es culpa de código?

Esto es todo lo que necesita:

excepción:

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:564)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:473)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:372)
    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:564)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:941)
Caused by: java.lang.RuntimeException: Exception in Application start method
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:973)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:198)
    at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: javafx.fxml.LoadException: 
/E:/programovanie/netgame/out/production/netgame/sample/sample.fxml:26

    at javafx.fxml/javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2625)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2603)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2466)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3253)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3210)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3179)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3152)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3129)
    at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:3122)
    at sample.Main.start(Main.java:13)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:919)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$11(PlatformImpl.java:449)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(PlatformImpl.java:418)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:417)
    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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:175)
    ... 1 more
Caused by: java.lang.IllegalArgumentException: Can not set org.w3c.dom.Text field sample.Controller.minuty to javafx.scene.text.Text
    at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
    at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
    at java.base/jdk.internal.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
    at java.base/java.lang.reflect.Field.set(Field.java:780)
    at javafx.fxml/javafx.fxml.FXMLLoader.injectFields(FXMLLoader.java:1174)
    at javafx.fxml/javafx.fxml.FXMLLoader.access$1600(FXMLLoader.java:105)
    at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:865)
    at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:759)
    at javafx.fxml/javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2722)
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2552)
    ... 17 more
Exception running application sample.Main

sample.fxml:

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

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Slider?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="900.0" xmlns="http://javafx.com/javafx/8.0.172-ea" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
    <children>
        <GridPane minHeight="100.0" minWidth="900.0" style="-fx-background-color: #CDE8C8; -fx-border-color: black;">
            <columnConstraints>
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
            </columnConstraints>
            <rowConstraints>
                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
            </rowConstraints>
            <children>
                <Text fx:id="minuty" strokeType="OUTSIDE" strokeWidth="0.0" text="00" wrappingWidth="225.125">
                    <font>
                        <Font size="40.0" />
                    </font>
                    <GridPane.margin>
                        <Insets left="50.0" />
                    </GridPane.margin>
                </Text>
                <Text strokeType="OUTSIDE" strokeWidth="0.0" text=":" textAlignment="CENTER" wrappingWidth="224.671875">
                    <font>
                        <Font size="40.0" />
                    </font>
                </Text>
                <Text fx:id="sekundy" strokeType="OUTSIDE" strokeWidth="0.0" text="00" textAlignment="RIGHT" wrappingWidth="176.9375">
                    <font>
                        <Font size="40.0" />
                    </font>
                    <GridPane.margin>
                        <Insets />
                    </GridPane.margin>
                </Text>
                <Text fx:id="stavcerveny" fill="RED" strokeType="OUTSIDE" strokeWidth="0.0" text="0" wrappingWidth="225.5625" GridPane.columnIndex="1">
                    <font>
                        <Font size="40.0" />
                    </font>
                    <GridPane.margin>
                        <Insets left="50.0" />
                    </GridPane.margin>
                </Text>
                <Text strokeType="OUTSIDE" strokeWidth="0.0" text=":" textAlignment="CENTER" wrappingWidth="225.671875" GridPane.columnIndex="1">
                    <font>
                        <Font size="40.0" />
                    </font>
                </Text>
                <Text fx:id="stavmodry" fill="#0073ff" strokeType="OUTSIDE" strokeWidth="0.0" text="0" textAlignment="RIGHT" wrappingWidth="157.5625" GridPane.columnIndex="1">
                    <font>
                        <Font size="40.0" />
                    </font>
                </Text>
                <Button alignment="CENTER" mnemonicParsing="false" onMouseClicked="#zapnutie" prefHeight="25.0" prefWidth="226.0" text="PLAY" GridPane.columnIndex="2">
                    <GridPane.margin>
                        <Insets bottom="40.0" left="40.0" right="40.0" />
                    </GridPane.margin>
                </Button>
                <Button mnemonicParsing="false" onMouseClicked="#restart" prefHeight="25.0" prefWidth="227.0" text="RESTART" textAlignment="CENTER" GridPane.columnIndex="2">
                    <opaqueInsets>
                        <Insets />
                    </opaqueInsets>
                    <GridPane.margin>
                        <Insets left="40.0" right="40.0" top="50.0" />
                    </GridPane.margin>
                </Button>
                <Slider fx:id="obtiazne" prefHeight="14.0" prefWidth="126.0" GridPane.columnIndex="3">
                    <GridPane.margin>
                        <Insets left="20.0" right="20.0" />
                    </GridPane.margin>
                </Slider>
            </children>
        </GridPane>
      <AnchorPane fx:id="hra" layoutY="100.0" prefHeight="500.0" prefWidth="900.0" />
    </children>
</AnchorPane>

Controller.java:

package sample;

import javafx.fxml.FXML;
import javafx.scene.control.Slider;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import org.w3c.dom.Text;

public class Controller {
    @FXML
    Slider obtiazne;
    @FXML
    Text minuty;
    @FXML
    Text sekundy;
    @FXML
    Text stavcerveny;
    @FXML
    Text stavmodry;
    @FXML
    AnchorPane hra;

    public void zapnutie(MouseEvent mouseEvent) {
        System.out.println(obtiazne.getValue());
    }

    public void restart(MouseEvent mouseEvent) {
    }
}

Main.java:

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"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }


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

Creo que las filas correctas son:

"En sample.Main.start (Main.java:13)"

Y eso es: "la raíz de Padres = FXMLLoader.load (. getClass () getResource (" sample.fxml "));"

No entiendo el resto de ella, así que espero, que se puede conseguir fácilmente a través del problema :)

AK47:

La parte del seguimiento de pila que es relevante

No se puede establecer org.w3c.dom.Text sample.Controller.minuty campo para javafx.scene.text.Text

Lo cual significa que sus importaciones están mal en la clase del controlador

Cambiar import org.w3c.dom.Text;aimport javafx.scene.text.Text;