I know that there are a lot of questions on this topic, but none of them could help me.
I followed the instructions from the JetBrains website on connecting JavaFX to IntelliJ IDEA, registered all the necessary VM options:
--module-path
/home/zahar/IdeaProjects/openjfx-11.0.2_linux-x64_bin-sdk/javafx-sdk-11.0.2/lib
--add-modules = javafx.controls, javafx.fxml, javafx.graphics
--add-exports
javafx.graphics/com.sun.javafx.sg.prism=ALL-UNNAMED
my code is:
package web;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;
public class WebPart extends Application {
#Override
public void start (final Stage stage) {
Button buttonURL = new Button ("Load Page https://eclipse.org");
Button buttonHtmlString = new Button ("Load HTML String");
Button buttonHtmlFile = new Button ("Load File C: /test/a.html");
final WebView browser = new WebView ();
final WebEngine webEngine = browser.getEngine ();
buttonURL.setOnAction (new EventHandler <ActionEvent> () {
#Override
public void handle (ActionEvent event) {
String url = "https://eclipse.org";
// Load a page from remote url.
webEngine.load (url);
}
});
buttonHtmlString.setOnAction (new EventHandler <ActionEvent> () {
#Override
public void handle (ActionEvent event) {
String html = "<html> <h1> Hello </h1> <h2> Hello </h2> </html>";
// Load HTML String
webEngine.loadContent (html);
}
});
buttonHtmlFile.setOnAction (new EventHandler <ActionEvent> () {
#Override
public void handle (ActionEvent event) {
try {
File file = new File ("C: /test/a.html");
URL url = file.toURI (). ToURL ();
// file: / C: /test/a.html
System.out.println ("Local URL:" + url.toString ());
webEngine.load (url.toString ());
} catch (MalformedURLException e) {
e.printStackTrace ();
}
}
});
VBox root = new VBox ();
root.setPadding (new Insets (5));
root.setSpacing (5);
root.getChildren (). addAll (buttonURL, buttonHtmlString, buttonHtmlFile, browser);
Scene scene = new Scene (root);
stage.setTitle ("JavaFX WebView (o7planning.org)");
stage.setScene (scene);
stage.setWidth (450);
stage.setHeight (300);
stage.show ();
}
public static void main (String [] args) {
launch (args);
}
after starting, I get an error:
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:566)
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:566)
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.IllegalAccessError: superclass access check failed: class com.sun.java.scene.web.WebViewHelper (in unnamed module #0x9efe064) cannot access class com.sun.javafx.scene.ParentHelper (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.scene to unnamed module #0x9efe064
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:800)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:698)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:621)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at javafx.scene.web.WebView.<clinit>(WebView.java:1271)
at web.WebPart.start(WebPart.java:27)
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$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$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.gtk.GtkApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
... 1 more
Exception running application web.WebPart
I know that it is possible to register another --add-export where I add the desired class, but when I write
--add-exports
javafx.graphics/com.sun.javafx.scene.ParentHelper
The IDE tells me that ParentHelper is not part of javafx.graphics.
switching to another JDK is not a good idea.
Related
This question already has answers here:
Exception in Application constructor when using JavaFX
(2 answers)
Closed 1 year ago.
I am new to javafx so I decided to do a project,
But when I run the program (literally no code inside the start method)
It does not work it says java.lang.reflect.InvocationTargetException error and one more
here is the code
package com.front.fire;
import javafx.application.Application;
import javafx.stage.Stage;
class FrontFireMain extends Application{
#Override
public void start(Stage arg0) throws Exception {
}
}
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class com.front.fire.FrontFireMain
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:890)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: java.lang.NoSuchMethodException: com.front.fire.FrontFireMain.<init>()
at java.base/java.lang.Class.getConstructor0(Class.java:3517)
at java.base/java.lang.Class.getConstructor(Class.java:2238)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:801)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:474)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:447)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:446)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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$3(WinApplication.java:174)
... 1 more
Your main class extends javafx.application.Application needs to be public. Change your class as below.
package com.front.fire;
import javafx.application.Application;
import javafx.stage.Stage;
public class FrontFireMain extends Application{
#Override
public void start(Stage arg0) throws Exception {
}
}
I'm trying to execute a .jar file which I produced from a JavaFX project (i already set the VM Options in Intellij with module path and modules to include) but I keep getting this error
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1010)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:855)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:753)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:676)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:634)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
at main.Launcher.main(Launcher.java:5)
Caused by: java.lang.ClassNotFoundException: javafx.application.Application
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
... 10 more
I also have a Launcher class, which Main method just does Main.main(args), where Main is the class that extends Application.
What can i do more?
This is the main class of my project
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
public class Main extends Application {
#Override
public void start(Stage primaryStage) {
try {
Parent root = FXMLLoader.load(getClass().getResource("/fxml/InserimentoPorta.fxml"));
primaryStage.setTitle("EP Miner");
primaryStage.setScene(new Scene(root));
primaryStage.show();
}catch (IOException e){
System.out.println(e.getMessage());
System.exit(-1);
}
}
public static void main(String[] args) {
launch(args);
}
}
And there are 3 controllers, one for each of my fxml file (i'm not posting the controllers code because the question would be too long and i don't think it's necessary to solve this problem)
This question already has an answer here:
How do I determine the correct path for FXML files, CSS files, Images, and other resources needed by my JavaFX Application?
(1 answer)
Closed 2 years ago.
I have created a JavaFX project, and have an error upon running, I suspect the error is within the following main class:
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
public class Main extends Application {
private Stage primaryStage;
private AnchorPane mainLayout;
public void start(Stage primaryStage) throws IOException {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("Real Estate Listings");
showMainGUI();
}
private void showMainGUI() throws IOException {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("C:\\Users\\micha\\Documents\\eclipse-workspace\\ProgAssignment2\\src\\MainGUI.fxml"));
mainLayout = loader.load();
Scene scene = new Scene(mainLayout);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Here is the error:
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: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:564)
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3316)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3280)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3249)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3222)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3199)
at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:3192)
at Main.showMainGUI(Main.java:22)
at Main.start(Main.java:17)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$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 Main
Upon some research, I've found the error most likely resides within the calling to the FXML loader, however after trying several different fixes I have been unable to come across a solution. Am I creating the FXML object incorrectly?
Thanks
I consider to have a closer look at the NullPointerException part which is mentioned inside the stacktrace you posted. Is the path to your file correct?
I've had a similar problem in the past. Try to change:
loader.setLocation(Main.class.getResource("C:\\Users\\micha\\Documents\\eclipse-workspace\\ProgAssignment2\\src\\MainGUI.fxml"));
to:
loader.setLocation(getClass().getClassLoader().getResource("C:\\Users\\micha\\Documents\\eclipse-workspace\\ProgAssignment2\\src\\MainGUI.fxml"));
I am using JavaFX 11 with Eclipse, i used e(fx)clipse to generate sample project but it gives this error, nothing was changed or added in this project. What can cause such behavior on just sample auto-generated project? I can see that there may be problem with loading class but i don't know how to fix it.
Main.java
package application;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.fxml.FXMLLoader;
public class Main extends Application {
#Override
public void start(Stage primaryStage) {
try {
AnchorPane root = (AnchorPane)FXMLLoader.load(getClass().getResource("Sample.fxml"));
Scene scene = new Scene(root,400,400);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
SampleController.java
package application;
public class SampleController {
}
Sample.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.SampleController">
<!-- TODO Add Nodes -->
</AnchorPane>
Error message:
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:566)
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:566)
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NoClassDefFoundError: javafx/fxml/FXMLLoader
at application.Main.start(Main.java:14)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$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$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$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$3(WinApplication.java:174)
... 1 more
Caused by: java.lang.ClassNotFoundException: javafx.fxml.FXMLLoader
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 10 more
Exception running application application.Main
The problem was that i did not add module javafx.fxml to run arguments.
I got my code to run when I copied and pasted my code into another javafx program that I had created a few weeks ago, but for some reason, whenever I create new javafx programs, I cannot get them to run and get these errors:
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:566)
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:566)
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$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.IllegalAccessError: superclass access check failed: class com.sun.javafx.scene.control.ControlHelper (in unnamed module #0xb69df6e) cannot access class com.sun.javafx.scene.layout.RegionHelper (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.scene.layout to unnamed module #0xb69df6e
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at javafx.scene.control.Control.<clinit>(Control.java:86)
at Homework4.Homework4.start(Homework4.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$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$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 Homework4.Homework4
I think that something is wrong with my JDK11 / JavaFX11 that does not allow me to create any more JavaFX projects because something is making each new project have this compile error. I think the error is due to the java.lang.IllegalAccessError but I have no idea how to fix it.
Here is my code for reference:
package Homework4;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Homework4 extends Application {
private TextField firstNum;
private TextField secondNum;
private Button plus;
private Button equals;
private TextField result;
#Override
public void start(Stage stage) {
firstNum = new TextField();
firstNum.setMaxWidth(100);
firstNum.setOnAction(event -> handleEquals(event));
secondNum = new TextField();
secondNum.setMaxWidth(100);
secondNum.setOnAction(event -> handleEquals(event));
plus = new Button("+");
plus.setOnAction(event -> handleEquals(event));
equals = new Button("=");
equals.setOnAction(event -> handleEquals(event));
result = new TextField();
result.setEditable(false);
HBox innerPane = new HBox();
innerPane.setSpacing(10);
innerPane.setPadding(new Insets(10, 10, 10, 10));
innerPane.getChildren().addAll(firstNum, plus, secondNum, equals);
VBox pane = new VBox();
pane.setPadding(new Insets(10, 10, 10, 10));
pane.getChildren().addAll(innerPane, result);
stage.setScene(new Scene(pane));
stage.setTitle("Welcome to Calculator 3000!");
stage.show();
}
private void handleEquals(ActionEvent event){
if(!(firstNum.getText().equals("") || secondNum.getText().equals(""))){
result.setText(firstNum.getText() + secondNum.getText());
}
}
public static void main(String[] args) {
launch(args);
}
}
I am currently using the most recently updated IntelliJ Idea to code.
Side note, I am currently a Freshman in college just starting to create javafx projects, so any help/suggestions are welcome!
I tried to look at this thread for help: InvocationTargetException when running a javafx program
Unfortunately I do not have the coding knowledge to understand the suggestions that people posted in this thread.
It turns out that I did not set up IntelliJ correctly, which resulted in my InvocationTargetException. Assuming that all of your environmental variables are correct, follow these instructions to possibly fix the exception.