Java Swing GUI not showing?

[fbradyirl]

Hi,

I have being programming in Java for a couple of years but have just moved to Ubuntu (7.04). I am trying to launch a swing GUI I have created but the GUI doesn't show (see screenshot)



I have tried to recompile using suns 1.5 JDK using Eclipse & Netbeans but the GUI still doesnt show! Anyone any ideas? I think it might be a GNOME problem. I have searched all over but can't find any fix.

PS - the GUI runs fine under Solaris, Win32, & Mac OS X

Thanks for any tips

[DC@DR]

That problem must be on your side, since my Java Swing works just fine here. Please make sure that you compiled the code and/or Eclipse running with Sun Java, not GCJ. If you're not sure what to do, just run sudo update-java-alternatives -s sun_java_version_you_installed (i.e in my case, I'd issue this command:

sudo update-java-alternatives -s java-1.5.0-sun

G'luck
P/S: If this still doesnt help, you could, if possible, post your code up here, so we can test for you.

[fbradyirl]

Thanks a lot. I have tried that earlier today & as you suggested I have been compiling & running with suns JDK (1.5). I also tried 1.6 but no joy. The source code is here:

http://meteorjsms.googlepages.com/src.zip

The main method is in com.googlepages.meteorjsms.gui.MeteorJSMSGUI.java
The GUI should look something like this-


Thanks.

[Vert]

I haven't looked at the source code just yet, but make sure you don't have Compiz or Beryl running. Some Java applications which use the Swing API (If I remember correctly) have trouble displaying.

[fbradyirl]

I haven't looked at the source code just yet, but make sure you don't have Compiz or Beryl running. Some Java applications which use the Swing API (If I remember correctly) have trouble displaying.

Yes that is probably it I hadn't thought of that. I have 'Desktop Effects' enabled in preferences. Is there any workaround for this yet? Thanks.

[srt4play]

Yes that is probably it I hadn't thought of that. I have 'Desktop Effects' enabled in preferences. Is there any workaround for this yet? Thanks.

Yes there is, check this thread:

http://ubuntuforums.org/showthread.php?t=362821

Which shows the fix being to add:

export AWT_TOOLKIT="MToolkit"

to the end of the file /etc/profile

[fbradyirl]

Yes there is, check this thread:

http://ubuntuforums.org/showthread.php?t=362821

Which shows the fix being to add:

export AWT_TOOLKIT="MToolkit"

to the end of the file /etc/profile

Thanks a lot. I have been searching for days for this. I will try this out on Monday when I get back into work!!
Cheers.