[Java-gnome-developer] error: java.lang.reflect.InvocationTargetException: ListenerDelegate.create failure

[Leonardo M. <leo...@gm...>]

Error java.lang.reflect.InvocationTargetException:
ListenerDelegate.create failure

Class:

package org.gnome.gjobs;

import java.io.FileNotFoundException;
import java.io.IOException;

import org.gnu.glade.GladeXMLException;
import org.gnu.glade.LibGlade;
import org.gnu.gtk.Gtk;

public class Principal {

=09LibGlade glade;
=09
=09public Principal() throws GladeXMLException, FileNotFoundException,
IOException {
=09=09glade =3D new LibGlade("gtk/gjobs.glade",this);
=09}
=09
=09public static void main(String[] args) {
=09=09
=09=09Principal principal;
=09=09Gtk.init(args);
=09=09
=09=09try {
=09=09=09principal =3D new Principal();
=09=09} catch (GladeXMLException e) {
=09=09=09e.printStackTrace();
=09=09} catch (FileNotFoundException e) {
=09=09=09e.printStackTrace();
=09=09} catch (IOException e) {
=09=09=09e.printStackTrace();
=09=09}
=09=09
=09=09Gtk.main();
=09}
=09
=09public void on_button3_clicked() {
=09=09System.out.println("clicado");
=09}
}

--=20
Leonardo Marques=20
Bras=EDlia - DF