java - Caused by: javafx.fxml.LoadException error -
this code worked, i'm in trouble. think problem, idk:
caused by: javafx.fxml.loadexception: /c:/users/alex/workspace/fxmlexample/bin/application/login.fxml:10 i don't know / understand wrong in these codes. in main run scene. » main.java
package application; import javafx.application.application; import javafx.fxml.fxmlloader; import javafx.stage.stage; import javafx.scene.parent; import javafx.scene.scene; public class main extends application { parent root; @override public void start(stage stage) throws exception { root = fxmlloader.load(getclass().getresource("login.fxml")); scene scene = new scene(root, 800, 600); stage.settitle("login system"); stage.setscene(scene); stage.show(); } public static void main(string[] args) { launch(args); } } » login.fxml, here think problem
<?xml version="1.0" encoding="utf-8"?> <?import java.net.*?> <?import javafx.geometry.*?> <?import javafx.scene.control.*?> <?import javafx.scene.layout.*?> <?import javafx.scene.text.*?> <gridpane xmlns:fx="http://javafx.com/fxml" fx:controller="fxmlexample.buton" alignment="center" hgap="10" vgap="10" styleclass="root"> <padding> <insets top="25" right="25" bottom="10" left="25" /> </padding> <text fx:id="bunvenit" text="bun venit!" gridpane.columnindex="0" gridpane.rowindex="0" /> <text fx:id="text" text="logheaza-te folosind datele tale personale:" gridpane.columnindex="0" gridpane.rowindex="1" gridpane.columnspan="2" /> <label text="username:" gridpane.columnindex="0" gridpane.rowindex="2" /> <textfield fx:id="username" gridpane.columnindex="1" gridpane.rowindex="2" /> <label text="parola:" gridpane.columnindex="0" gridpane.rowindex="3" /> <passwordfield fx:id="parola" gridpane.columnindex="1" gridpane.rowindex="3" /> <hbox spacing="10" alignment="bottom_right" gridpane.columnindex="1" gridpane.rowindex="5"> <button text="logheaza-te" onaction="#loginbutton" /> </hbox> <text fx:id="eroare" gridpane.columnindex="1" gridpane.rowindex="7" /> <button text="am uitat parola" gridpane.columnindex="0" gridpane.rowindex="8" onaction="#passwordbutton" /> <button text="creeaza un cont nou" gridpane.columnindex="1" gridpane.rowindex="8" onaction="#createaccountbutton" /> <stylesheets> <url value="@application.css" /> </stylesheets> </gridpane> » buton.java, buttons actions
package fxmlexample; import java.io.bufferedreader; import java.io.filenotfoundexception; import java.io.filereader; import java.io.ioexception; import javafx.event.actionevent; import javafx.fxml.fxml; import javafx.fxml.fxmlloader; import javafx.scene.node; import javafx.scene.parent; import javafx.scene.scene; import javafx.scene.control.alert; import javafx.scene.control.alert.alerttype; import javafx.scene.control.buttontype; import javafx.scene.control.passwordfield; import javafx.scene.control.textfield; import javafx.scene.text.text; import javafx.stage.stage; public abstract class buton { private static final int scene_height = 600; private static final int scene_width = 800; @fxml private text eroare; @fxml private textfield username; @fxml private passwordfield parola; @fxml private parent root; /* loginbutton */ @fxml protected void loginbutton(actionevent event) throws ioexception { boolean gasit = false; try (bufferedreader buf = new bufferedreader(new filereader("data//in//users.txt"))) { string linie; gasit = false; while ((linie = buf.readline()) != null) { string part[] = linie.split(" "); if (username.gettext().equals(part[0]) && parola.gettext().equals(part[1])) { gasit = true; } } } catch (filenotfoundexception e) { e.printstacktrace(); } catch (ioexception e) { e.printstacktrace(); } if (gasit) { parent root = fxmlloader.load(getclass().getresource("../application/logged.fxml")); scene scene = new scene(root, scene_width, scene_height); stage stage = (stage) ((node) event.getsource()).getscene().getwindow(); stage.setscene(scene); stage.settitle("felicitari, te-ai logat cu succes!"); stage.show(); } else { eroare.settext("username sau parola incorecta!"); } } } » errors:
exception in application start method java.lang.reflect.invocationtargetexception @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source) @ java.lang.reflect.method.invoke(unknown source) @ com.sun.javafx.application.launcherimpl.launchapplicationwithargs(unknown source) @ com.sun.javafx.application.launcherimpl.launchapplication(unknown source) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source) @ java.lang.reflect.method.invoke(unknown source) @ sun.launcher.launcherhelper$fxhelper.main(unknown source) caused by: java.lang.runtimeexception: exception in application start method @ com.sun.javafx.application.launcherimpl.launchapplication1(unknown source) @ com.sun.javafx.application.launcherimpl.lambda$launchapplication$156(unknown source) @ java.lang.thread.run(unknown source) caused by: javafx.fxml.loadexception: /c:/users/alex/workspace/fxmlexample/bin/application/login.fxml:10 @ javafx.fxml.fxmlloader.constructloadexception(unknown source) @ javafx.fxml.fxmlloader.access$700(unknown source) @ javafx.fxml.fxmlloader$valueelement.processattribute(unknown source) @ javafx.fxml.fxmlloader$instancedeclarationelement.processattribute(unknown source) @ javafx.fxml.fxmlloader$element.processstartelement(unknown source) @ javafx.fxml.fxmlloader$valueelement.processstartelement(unknown source) @ javafx.fxml.fxmlloader.processstartelement(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.loadimpl(unknown source) @ javafx.fxml.fxmlloader.load(unknown source) @ application.main.start(main.java:15) @ com.sun.javafx.application.launcherimpl.lambda$launchapplication1$163(unknown source) @ com.sun.javafx.application.platformimpl.lambda$runandwait$176(unknown source) @ com.sun.javafx.application.platformimpl.lambda$null$174(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ com.sun.javafx.application.platformimpl.lambda$runlater$175(unknown source) @ com.sun.glass.ui.invokelaterdispatcher$future.run(unknown source) @ com.sun.glass.ui.win.winapplication._runloop(native method) @ com.sun.glass.ui.win.winapplication.lambda$null$149(unknown source) ... 1 more caused by: java.lang.instantiationexception @ sun.reflect.instantiationexceptionconstructoraccessorimpl.newinstance(unknown source) @ java.lang.reflect.constructor.newinstance(unknown source) @ java.lang.class.newinstance(unknown source) @ sun.reflect.misc.reflectutil.newinstance(unknown source) ... 23 more exception running application application.main
it says:
java.lang.instantiationexception @ sun.reflect.instantiationexceptionconstructoraccessorimpl.newinstance(unknown source) @ java.lang.reflect.constructor.newinstance(unknown source) it cannot instantiate abstract buton class. make concrete.
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