NiftyGUI's Nifty class cant instantiate?

Question

package test;

import java.io.IOException;

import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.examples.LwjglInitHelper;
import de.lessvoid.nifty.nulldevice.NullSoundDevice;
import de.lessvoid.nifty.renderer.lwjgl.render.LwjglRenderDevice;
import de.lessvoid.nifty.sound.openal.OpenALSoundDevice;
import de.lessvoid.nifty.spi.time.impl.AccurateTimeProvider;

public final class Test {

    private Test(){ 
    }

    public static void main(final String[] args) throws IOException {
        if (!LwjglInitHelper.initSubSystems("Nifty Hello World")) {
            System.exit(0);
        }

        // create nifty
        Nifty nifty = new Nifty(new LwjglRenderDevice(), new OpenALSoundDevice(),
                LwjglInitHelper.getInputSystem(), new AccurateTimeProvider());
    }
}

I'm trying to use NiftyGUI but it can't even pass the nifty = new Nifty part. I have all the dependencies.

This is the error I get for the line of Nifty nifty = new Nifty(:

Caused by: java.lang.ClassNotFoundException: org.bushe.swing.event.EventTopicSubscriber
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 1 more

Can someone help me out with this? I've even tried importing every nifty library.

What are you using to compile and run, and how are you trying to do that? It looks like it's just a classpath issue... — Jon Skeet, Mar 02 '14 at 18:03
im using eclipse. i have all the .jars needed on my classpath. lwjgl.jar, lwjgl-util.jar, nifty.jar, nifty-lwjgl-renderer.jar, nifty-default-controls.jar, nifty-examples.jar, nifty-style-black.jar, xpp3-1.1.4c.jar — caxco93, Mar 02 '14 at 18:10
Well which of those (if any) contains `org.bushe.swing.event.EventTopicSubscriber`? — Jon Skeet, Mar 02 '14 at 18:11
org.bushe.swing.event.EventTopicSubscriber is for Nifty.subscribe [link](http://nifty-gui.sourceforge.net/projects/1.3/nifty/apidocs/de/lessvoid/nifty/Nifty.html) — caxco93, Mar 02 '14 at 18:16
@caxco93: You still haven't said which jar file contains `EventTopicSubscriber`... — Jon Skeet, Mar 02 '14 at 18:37
@JonSkeet what can i do to know that? all i know is that Nifty.subscribe() method extends org.bushe.swing.event.EventTopicSubscriber — caxco93, Mar 02 '14 at 18:44
@caxco93: A method doesn't extend a type... Did you mean returns? I suggest you research that location (look within the jar files you've got and search on the web). — Jon Skeet, Mar 02 '14 at 18:45

score 3 · Accepted Answer · answered Mar 02 '14 at 19:06

After doing a bit of research, it looks like you're missing the eventbus jar file. You can download the jar file from the Maven repository.

Note that I didn't know anything about this class beforehand - it was merely a matter of looking carefully at the stack trace and then doing research on the internet. Simply doing a search for the class name was enough, after a few hits.

NiftyGUI's Nifty class cant instantiate?

1 Answers1