Re: [Java-gnome-developer] java.lang.UnsatisfiedLinkError: gnome_date_edit_new

[Jeffrey M. <ku...@zo...>]

I believe the UnsatisfiedLinkError means something else.  It
typically means that the java runtime could not find a method
on a native library when it tried to make a call.  In this case
the error is not that the java-gnome libraries could not be found
but that the gnome libraries were not initialized and loaded properly.
If you add the following line:

	Program.initGnomeUI("DateEditDemo", "1.0", args);

just prior to the call to Gtk.init and include the Program
import your example will work.

-Jeff

On Sat, 2003-10-25 at 07:42, Jason Peterson wrote:
> Hi everyone,
> 
> I recently installed java-gnome(had a problem building because I didn't
> have ANT installed) compiled and ran the example code.  Everything went
> well.  I am interested in the DateEdit class. I edited the
> EntryDemo.java example....
> 
> http://java-gnome.sourceforge.net/docs/GNOME-tutorial/c688.html#ENTRY
> 
> to the following....
> 
> 
> import org.gnu.gnome.DateEdit;
> import org.gnu.gtk.Gtk;
> import org.gnu.gtk.HBox;
> import org.gnu.gtk.Widget;
> import org.gnu.gtk.Window;
> import org.gnu.gtk.WindowType;
> import org.gnu.gtk.event.LifeCycleEvent;
> import org.gnu.gtk.event.LifeCycleListener;
> import java.util.Date;
> public class DateEditDemo {
> 
> 	public static void main(String[] args) {
> 		boolean thetruth = true;
> 		Gtk.init(args);
> 		Window w = new Window(WindowType.TOPLEVEL);
> 		w.addListener(new LifeCycleListener() {
> 			public void lifeCycleEvent(LifeCycleEvent event) {
> 				if (event.isOfType(LifeCycleEvent.Type.DESTROY) || 
> 					event.isOfType(LifeCycleEvent.Type.DELETE)) {
> 					Gtk.mainQuit();
> 				}
> 			}
> 		});
> 		w.setDefaultSize(200,200);
> 		w.setBorderWidth(5);
> 		w.setTitle("DateEdit Demo!!!");
> 		w.add(new DateEdit(new Date(), thetruth, thetruth ));
> 		w.showAll();
> 		Gtk.main();
> 	}
> }
> 
> 
> the code compiles fine and when launched I get the following....
> 
> 
> Exception in thread "main" java.lang.UnsatisfiedLinkError:
> gnome_date_edit_new
>         at org.gnu.gnome.DateEdit.gnome_date_edit_new(Native Method)
>         at org.gnu.gnome.DateEdit.<init>(DateEdit.java:52)
>         at DateEditDemo.main(DateEditDemo.java:27)
> 
> I have only worked a little bit with Java Native Interface so I don't
> know where to start. A little research suggests the following in
> DateEdit.java...
> 
> native static final protected int gnome_date_edit_new(long the_time,
> boolean show_time, boolean use_24_format);
> 
> should be changed to the following along with the supporting code but I
> am not sure....
> 
> native static final protected int gnome_date_edit_new(int the_time, int
> show_time, int use_24_format);
> 
> gnome_date_edit_new suggests that "the_time" in an unsigned long (32
> bits) not java long (64 bits) and the show_time and use_24_format are
> int not boolean.  But again I am very new to JNI.. I made the changes
> but got the same error UnsatisfiedLinkError
> 
> 
> I'm I way off?
> 
> Thanks,
> 
> Jason Peterson -- ja...@wi...
> 
> 
> 
> 
> 
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-- 
Jeffrey Morgan <ku...@zo...>