FXML can't find the image

I modified the FXML example:
http://download.Oracle.com/JavaFX/2.0/fxml_get_started/jfxpub-fxml_get_started.htm

The main class now looks like this:

package fxmlexample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

import java.util.ResourceBundle;

public class FXMLExample extends Application
{
    @Override
    public void start(Stage stage) throws Exception
    {
        stage.setTitle("FXML Example");

        FXMLLoader loader = new FXMLLoader();
        loader.setResources(ResourceBundle.getBundle("fxmlexample.fxml_example"));
        Pane root = (Pane) loader.load(getClass().getResourceAsStream("fxml_example.fxml"));

        stage.setScene(new Scene(root, 226, 264));
        stage.setVisible(true);
    }

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

He breaks with the exception:

2011-sep-07 16:35:12 javafx.fxml.FXMLLoader logException
ALLVARLIG: The following error occurred at line 49:
java.lang.InstantiationException: javafx.scene.image.Image
Exception in Application start method
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
     at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:378)
     at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:27)
     at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:97)
     at java.lang.Thread.run(Thread.java:662)
Caused by: javafx.fxml.LoadException: java.lang.InstantiationException: javafx.scene.image.Image
     at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(FXMLLoader.java:579)
     at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:344)
     at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:1447)
     at javafx.fxml.FXMLLoader.load(FXMLLoader.java:1346)
     at fxmlexample.FXMLExample.start(FXMLExample.java:53)
     at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:298)
     at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:136)
     at com.sun.javafx.application.PlatformImpl$3.run(PlatformImpl.java:108)
     at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
     at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
     at com.sun.glass.ui.win.WinApplication$1$1.run(WinApplication.java:49)
     ... 1 more
Caused by: java.lang.InstantiationException: javafx.scene.image.Image
     at java.lang.Class.newInstance0(Class.java:340)
     at java.lang.Class.newInstance(Class.java:308)
     at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(FXMLLoader.java:577)
     ... 11 more

The FXMLLoader had no problem finding the image during the load statement was FXMLLoader.load (...) as in the example, but when I change to an instance that takes an InputStream to its load method it breaks.

If I comment away the tag of the ImageView in the fxml file it runs.

Why can't FXLoader find the image in this case?

Kind regards
/ Robert

Published by: RobertSjodahl on 07-sep-2011 07:42

Hi Robert,.

image loading fails because the charger in your code is not yet configured completely.
Try this:

URL url = getClass().getResource("fxml_example.fxml");
FXMLLoader loader = new FXMLLoader();
loader.setLocation(url);
loader.setResources(ResourceBundle.getBundle("fxmlexample.fxml_example"));
loader.setBuilderFactory(new JavaFXBuilderFactory(false));
Pane root = (Pane) loader.load(url.openStream());

With this modifiction your example works.

Actually just static Chargers do that for you, but they are useless, as long as you don't get access
the created instance internally in order to access controllers and includes.

Michael

Published by: MiPa on 08.09.2011 01:45

Tags: Java

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