How to fix this Exception in Application start method
Questions : How to fix this Exception in Application start method
2022-09-16T02:09:58+00:00 2022-09-16T02:09:58+00:00
692
I'm new to JavaFX and I was trying to make a anycodings_netbeans JavaFX FXML Application project using anycodings_netbeans Netbeans IDE but I face this exception.
This my java class:
This My FXML Code:
<?xml version="1.0" encoding="UTF-8"?> <?import javafx.scene.control.Button?> <?import javafx.scene.layout.AnchorPane?> <AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320" xmlns:fx="//javafx.com/fxml/1" xmlns="//javafx.com/javafx/8.0.171" fx:controller="javafxapplication9.FXMLDocumentController"> <children> <Button fx:id="button" layoutX="126" layoutY="90" onAction="#handleButtonAction" text="Click Me!" /> </children> </AnchorPane>This is my controller class :
public class FXMLDocumentController implements Initializable { @FXML private Label label; @FXML private void handleButtonAction(ActionEvent event) { System.out.println("You clicked me!"); label.setText("Hello World!"); } @Override public void initialize(URL url, ResourceBundle rb) { // TODO } }That is Exception in Application start anycodings_netbeans method anycodings_netbeans java.lang.reflect.InvocationTargetException anycodings_netbeans javafx
java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389) at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767) Caused by: java.lang.RuntimeException: Exception in Application start method at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917) at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException: Location is required. at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3207) at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175) at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148) at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124) at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097) at javafxapplication9.JavaFXApplication9.start(JavaFXApplication9.java:22) at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863) at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326) at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) ... 1 more Exception running application javafxapplication9.JavaFXApplication9 E:\Netbeans Project\JavaFXApplication9\nbproject\build-impl.xml:1052: The following error occurred while executing this line: E:\Netbeans Project\JavaFXApplication9\nbproject\build-impl.xml:806: Java returned: 1 BUILD FAILED (total time: 1 second)Total Answers 1
30
Answers 1 : of How to fix this Exception in Application start method
The main cause of this exception is a anycodings_netbeans NullPointerException (see stacktrace: anycodings_netbeans Location is required ). So you try to anycodings_netbeans use something which is not initiated. anycodings_netbeans Hard to find a mistake without any code anycodings_netbeans snippets.
0
2022-09-16T02:09:58+00:00 2022-09-16T02:09:58+00:00Answer Link
mRahman