I'm trying to generate a new stage from a menu item but at the time of generating the code I get an error, I have tried everything, but I still get the same, I am declaring the variables well, but for the constructor did not recognize or did not obtain the origin of the FXML document, I leave the segment of the code where I make the respective declarations:
@FXML private Parent root;
Stage stage;
private void menu() throws IOException {
FXMLLoader fxmlLoader = new FXMLLoader();
fxmlLoader.setLocation(getClass().getResource("Datos.fxml"));
/*
* if "fx:controller" is not set in fxml
* fxmlLoader.setController(NewWindowController);
*/
Scene scene = new Scene(fxmlLoader.load(), 600, 400);
Stage stage = new Stage();
stage.setTitle("enlace");
stage.setScene(scene);
stage.show();
}
public void llamamenu() {
mbarcliente.setOnAction(e->{
try {
menu();
} catch (IOException e1) {
e1.printStackTrace();
}
});
}
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at application.ConexionController.menu(ConexionController.java:79)
at application.ConexionController.lambda$0(ConexionController.java:90)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.control.MenuItem.fire(MenuItem.java:462)
at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.doSelect(ContextMenuContent.java:1405)
at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.lambda$createChildren$343(ContextMenuContent.java:1358)
at com.sun.javafx.event.CompositeEventHandler$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.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$MouseEventNotification.run(GlassViewEventHandler.java:381)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at application.ConexionController.initialize(ConexionController.java:58)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
... 46 more
javafx.fxml.LoadException:
/C:/Users/ROA%20PC/eclipse-workspace/Conexion/bin/application/Datos.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at application.ConexionController.menu(ConexionController.java:79)
at application.ConexionController.lambda$0(ConexionController.java:90)
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.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
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.control.MenuItem.fire(MenuItem.java:462)
this is my FXML code vista.fxml :
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane prefHeight="497.0" prefWidth="943.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.ConexionController">
<children>
<Pane layoutX="2.0" layoutY="-4.0" prefHeight="497.0" prefWidth="921.0">
<children>
<Button fx:id="btn" layoutX="15.0" layoutY="52.0" mnemonicParsing="false" onAction="#cargarconexion" prefHeight="46.0" prefWidth="117.0" text="Prueba Conexion" />
<Button fx:id="mtn" layoutX="14.0" layoutY="131.0" mnemonicParsing="false" onAction="#cargarregistro" prefHeight="46.0" prefWidth="117.0" text="Inserta Registro" />
<Label layoutX="21.0" layoutY="206.0" prefHeight="17.0" prefWidth="105.0" text="NOMBRES" />
<Label layoutX="21.0" layoutY="250.0" prefHeight="17.0" prefWidth="79.0" text="APELLIDOS" />
<TextField fx:id="nm" layoutX="100.0" layoutY="202.0" />
<TextField fx:id="ap" layoutX="100.0" layoutY="246.0" />
<Button fx:id="lmp" layoutX="21.0" layoutY="313.0" mnemonicParsing="false" onAction="#borrarcasillatexto" prefHeight="46.0" prefWidth="117.0" text="Limpiar Texto" />
<TableView fx:id="tablacliente" layoutX="309.0" layoutY="14.0" prefHeight="383.0" prefWidth="343.0">
<columns>
<TableColumn fx:id="clienteid" prefWidth="75.0" text="ID" />
<TableColumn fx:id="nombrescol" prefWidth="139.0" text="NOMBRES" />
<TableColumn fx:id="apellidoscol" prefWidth="128.0" text="APELLIDOS" />
</columns>
</TableView>
<Button fx:id="mts" layoutX="162.0" layoutY="52.0" mnemonicParsing="false" onAction="#mostrartodo" prefHeight="46.0" prefWidth="117.0" text="Mostrar" />
<TextField fx:id="bq" layoutX="309.0" layoutY="417.0" prefHeight="25.0" prefWidth="241.0" />
<Button fx:id="bqd" layoutX="576.0" layoutY="417.0" mnemonicParsing="false" onAction="#buscanm" prefHeight="25.0" prefWidth="132.0" text="BUSCAR NOMBRE" />
<Button fx:id="bqape" layoutX="725.0" layoutY="417.0" mnemonicParsing="false" onAction="#buscaape" prefHeight="25.0" prefWidth="156.0" text="BUSCAR POR APELLIDO" />
<TextField fx:id="bqa" layoutX="729.0" layoutY="359.0" />
<MenuBar layoutX="-4.0" layoutY="2.0" prefHeight="25.0" prefWidth="79.0">
<menus>
<Menu mnemonicParsing="false" text="Agregar">
<items>
<MenuItem fx:id="mbarcliente" mnemonicParsing="false" onAction="#llamamenu" text="Datos Cliente" />
</items>
</Menu>
</menus>
</MenuBar>
</children>
</Pane>
</children>
</AnchorPane>
code datos.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane prefHeight="303.0" prefWidth="354.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.ConexionController">
<children>
<Pane layoutX="58.0" layoutY="52.0" prefHeight="200.0" prefWidth="200.0">
<children>
<Text layoutX="43.0" layoutY="83.0" strokeType="OUTSIDE" strokeWidth="0.0" text="prueba" wrappingWidth="114.453125">
<font>
<Font name="Arial" size="34.0" />
</font>
</Text>
</children></Pane>
</children>
</AnchorPane>
I am trying to call a file FXML which contains a new window from menuitem , any help, observation or guidance are welcome.