FULL PRODUCT VERSION :
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b90)
Java HotSpot(TM) Client VM (build 1.6.0-rc-b90, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Linux Golgotha 2.6.17-ARCH #1 SMP PREEMPT Tue Jun 20 12:31:51 CEST 2006 i686  customer (R) Pentium(R) M processor 1.60GHz GenuineIntel GNU/Linux

EXTRA RELEVANT SYSTEM CONFIGURATION :
KDE version 3.5.3

A DESCRIPTION OF THE PROBLEM :
I played around with the new systray feature in Mustang and realized that the icon will not appear in the tray area of KDE. I tried the same program under Windows and Gnome with success. Only KDE has problems displaying the icon.
When I start the program the space for the tray icon appears in KDEs Tray but it's empty. The popup menu is also not shown when clicking on the empty space with right mouse button.
I realized one time that the icon moved from up to down like pictures scrolling through a screen but I could not reproduce that again.
Earlier I tried also Mustang BETA 1 with the same result.
I will attach the code I'm using. Keep in mind that javacup.gif which is used by the code is missing but you can take other images as well. For simplicity you can simply take http://chat.ananzi.co.za/javacup.gif which should be the same except of the size maybe.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.AWTException;
import java.awt.Image;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.Toolkit;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/*
 * Created on May 19, 2006
 */

public class Systray {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Image image = Toolkit.getDefaultToolkit().getImage("images/javacup.gif");
	     TrayIcon trayIcon = null;
	     if (SystemTray.isSupported()) {
	         // get the SystemTray instance
	         SystemTray tray = SystemTray.getSystemTray();
	         
	         // create a action listener to listen for default action executed on the tray icon
	         ActionListener listener = new ActionListener() {
	             public void actionPerformed(ActionEvent e) {
	                 
	             }
	         };
	         // create a popup menu
	         PopupMenu popup = new PopupMenu();
	         // create menu item for the default action
	         MenuItem defaultItem = new MenuItem("test entry");
	         defaultItem.addActionListener(listener);
	         popup.add(defaultItem);
	         /// ... add other items
	         // construct a TrayIcon
	         trayIcon = new TrayIcon(image, "Tray Demo", popup);
	         trayIcon.setImageAutoSize(true);
	         // set the TrayIcon properties
	         trayIcon.addActionListener(listener);
	         // ...
	         // add the tray image
	         try {
				tray.add(trayIcon);
			} catch (AWTException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
	         // ...
	     } else {
	         // disable tray option in your application or
	         // perform other actions
	     }
	     // ...
	     // some time later
	     // the application state has changed - update the image
	     if (trayIcon != null) {
	    	 trayIcon.setImage(image);
	     }
	     // ...
	}

}

---------- END SOURCE ----------
Posted Date : 2006-07-14 07:29:57.0

N/A

The bug is not reproducible with KDE 3.3.x, as there is no KDE 3.5.3 here I can't run the test with it.
Posted Date : 2006-07-14 13:50:00.0

On KDE 3.5.1 the test also works fine and a tray icon appears.
Posted Date : 2006-07-18 12:14:02.0

It seems that this bug is specific to KDE 3.5.3 as the submitter confirmed that with 3.5.1 no problems appear.
Posted Date : 2006-07-19 08:07:04.0

The problem is in the workaround used to center the icon window on Gnome desktop.
It breaks the behaviour (sets wrong position) on KDE.
Posted Date : 2006-07-21 15:18:32.0

I've exactly the same problem!
I'm also using kde 3.5.3 here and get the same problems.

I'm not sure, but I think you can reproduce the image-scrolling-effect by clicking the 'left arrow' in the tray which hides unused Icons from tray (like windows-XP). Maybe this is new feature of kde 3.5 (hiding unused icons) is the problem for this behavior?

Martin

Same here on KDE 3.5.3 with or without transparent tray panel.

I observe the same with java version "1.6.0-beta2" and the Systray Example from http://java.sun.com/developer/technicalArticles/J2SE/Desktop/mustang/systemtray/

I have "corrected" that example in that I have moved the tray.gif into the classes directory and verified with strace that it is actually open-ed.

Same for me, but i see the icon for a half of a second, then it's gone.

(K)ubuntu, KDE 3.5.2

> Same for me, but i see the icon for a half of a second, then it's gone.
For me too.

I've installed the latest Mustang snapshot and the problem is still there.

Still broken in b102. 

I hope it's a typo to move this fix to dolphin rollout ?!

Especially as this is a new feature for JDK 6. Does it make to sense to have a new feature starting out broken ???

Yes, the bug is fixed in JDK 7. I'd like to have the fix in JDK 6 as well as you, but  I'm afraid  it's too late =(
However the CR is commited to JDK 6u1.  So, the fix will definetely be delivered to that update. Please, be patient.

Anton. AWT.

It would be at least good if the vm would throw an exception if trayicon is not supportet on a plattform.

Current state is worst. Somebody installa a java application, runs it on KDE and it simply does not show up in the systemtray panel. Program is running though and ressources are used.

The problem described in this CR is a _bug_. It's not that  Java TrayIcon is not supported on latest KDE.
When SystemTray.isSupported() returns 'true' it means that the platform does support minimum  functionality. If native system tray is not available (e.g. removed) Java throws AWTException when trying to add an icon.

Anton. AWT.

OMG we've been waiting for years for this feature, and when we got it - we have it broken!  What kind of testers are there that they didn't bother testing the SystemTray under KDE??
As if it were artificial intelligence!
I've tested under KDE in Slackware 11 and Mandriva release october 2006 (both last versions) and the icon still won't show up with jdk-beta-104!
What a shame moving it to Dolphin! Microsoft must be laughing!
And not only them!
With lazy and buggy steps Java's never gonna conquer the desktop! huh

Just a side note: KDE is not in the list of officially supported platforms for jdk, thus testers do not test it :(

At earlier jdk 6 betas KDE  *WAS* supported !

It should work on Java 6 :( Still not working on KDE 3.5.4 and jdk1.6.0-b104.

Negative, it does not work (at least for Debian/unstable KDE 3.5.5, JDK 1.6.0). The attached code makes creates just empty space (no image, no toolhelp) in the tray area:

--BEGIN CODE
import java.awt.*;
import java.util.*;

public class Systray {

	public static void main(String[] args) throws Exception {
		Image image = Toolkit.getDefaultToolkit().getImage("images/javacup.gif");
    TrayIcon trayIcon = null;
    SystemTray tray = SystemTray.getSystemTray();
    trayIcon = new TrayIcon(image, "Tray Demo");
    trayIcon.setImageAutoSize(true);
    tray.add(trayIcon);

    // keep VM running
    new Timer().schedule( new TimerTask() {
      public void run() {
        System.out.println( "running..." );
      }
    }, 1000, 1000 );
	}

}
--END CODE

a putback into jdk-6.0_u1 would be great.

We were so happy that we can use tray now - but all our Linux-Customers don't see this :-/

I think this stuff shouldn't break anything else?

On a somewhat related note to this, why arn't they using the OpenDesktop standard for system tray icons? I tryed to get the system tray running on XKCD which follows to OpenDesktop standard (Amarok displays just fine), but SystemTray.isSupported() returns false. Maybe kill 2 birds with one stone by simple switching to OpenDesktop standard?

Correction to previous post, I should have said FreeDesktop instead of OpenDesktop.

For the moment the only solution is to use the JDIC TrayIcon class. That seemed to work for me on KDE. The trayIcon wasn't scaled though and appeared in a rectangular area.

>> However the CR is commited to JDK 6u1.  So, the fix will
>> definitely be delivered to that update. Please, be patient.

I've been sufficiently patient for u1 but still nothing has happened.  Does this mean that Sun is ignoring KDE?

>> Just a side note: KDE is not in the list of officially
>> supported platforms for jdk, thus testers do not test it

So WORA does not apply to Java, is it so?  Do I understand that Java is OS independent, but is desktop environment dependent?

JRockit the independent implementation of Java 6 is generally available for download:
http://commerce.bea.com/products/weblogicjrockit/jrockit_prod_fam.jsp
The good news is Systray is working fine on KDE on JRockit.
Unfortunately I can't use it, but if you have no such limitation - go ahead.

The problem persists in JDK 6u2 as I just tested on Debian Etch and KDE 3.5.5.

I think it is bad, that once a bug has been closed because it has been fixed for some release in the far future (here jdk7) voting for the bug is not possible any more, so it gets lost behind any newly submitted bugs against the current jdk with the result that it is not fixed in minor releases.

One year and no progress - please fix! :(

Finally, the fix is in the JDK 6 coming update. It has been integrated into the 6u3 b01. I hope it's in public access soon. And thanks for the patience...

I think sun will not pay more attention to kde, in jdk6 docs it is officially said that tray icon works on windows and linux(gnome), without kde.

But at the same time Sun must understand that Gnome guys are busy with Mono (.NET port for Linux) and care very little, if at all they do, about Java.