java-gnome-developer

[Java-gnome-developer] libgtk help

[Skip C. <sco...@gm...>]

Hey All,  

I have upgraded my java-gnome ot stable 2.8.  Now I am running into a
problem with libglade that I did not have with the version 2.6.

Using eclipse-3, when I run a libglade example I get this error when
using sun's jdk-1.5.0:

(process:1687): GLib-GObject-CRITICAL **: gtype.c:2253: initialization
assertion failed, use g_type_init() prior to this function

(process:1687): GLib-GObject-CRITICAL **: file gobject.c: line 819
(g_object_new): assertion `G_TYPE_IS_OBJECT (object_type)' failed

(process:1687): GLib-GObject-CRITICAL **: file gobject.c: line 1579
(g_object_unref): assertion `G_IS_OBJECT (object)' failed
org.gnu.glade.GladeXMLException: file glade-xml.c: line 180
(glade_xml_construct): assertion `self != NULL' failed


Using sun's jdk-1.4.2.05: 
Exception in thread "main" java.lang.UnsupportedClassVersionError:
org/gnu/glade/LibGlade (Unsupported major.minor version 49.0)
	at java.lang.ClassLoader.defineClass0(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
	at gentoo.GUI.<init>(GUI.java:28)
	at gentoo.Main.main(Main.java:22)


Anyone have any ideas as to what the problem may be ?



scoon

Re: [Java-gnome-developer] libgtk help

[Mark H. <mh...@ti...>]

On Sat, Nov 06, 2004 at 08:33:08AM -0500, Skip Coon wrote:
> Using sun's jdk-1.4.2.05: 
> Exception in thread "main" java.lang.UnsupportedClassVersionError:
> org/gnu/glade/LibGlade (Unsupported major.minor version 49.0)
> 	at java.lang.ClassLoader.defineClass0(Native Method)

This is an inconsistancy in the class file format. You probably compiled
java-gnome with jikes. (the makefiles automatically pick a java compiler to use,
preferring open source ones). As default, this generates class files which are
too new for sun/blackdown java. This can be overridden with jikes --target 1.3.
To make java-gnome do this, you would have to modify the makefiles.

Alternatively, use another compiler for the job:
export JAVAC=javac before running autogen and make will make the scripts use
javac rather than jikes.
If you do this, be sure to remove all jar and class files first (make clean
should do this for you), otherwise some may not be recompiled.


-- 
  .''`. Mark Howard
 : :' :
 `. `'  http://www.tildemh.com 
   `-   mh...@de... | mh...@ti... 

Re: [Java-gnome-developer] libgtk help

[Skip C. <sco...@gm...>]

Hey there, 

Thanks for the response.  I already had JAVAC correctly set.  I
un-installed jikes just to make certain that it could not be used. 
Unfortunately, the error still persists.  Any other suggestions ?


scoon


On Sat, 6 Nov 2004 14:51:14 +0000, Mark Howard <mh...@ti...> wrote:
> On Sat, Nov 06, 2004 at 08:33:08AM -0500, Skip Coon wrote:
> > Using sun's jdk-1.4.2.05:
> > Exception in thread "main" java.lang.UnsupportedClassVersionError:
> > org/gnu/glade/LibGlade (Unsupported major.minor version 49.0)
> >       at java.lang.ClassLoader.defineClass0(Native Method)
> 
> This is an inconsistancy in the class file format. You probably compiled
> java-gnome with jikes. (the makefiles automatically pick a java compiler to use,
> preferring open source ones). As default, this generates class files which are
> too new for sun/blackdown java. This can be overridden with jikes --target 1.3.
> To make java-gnome do this, you would have to modify the makefiles.
> 
> Alternatively, use another compiler for the job:
> export JAVAC=javac before running autogen and make will make the scripts use
> javac rather than jikes.
> If you do this, be sure to remove all jar and class files first (make clean
> should do this for you), otherwise some may not be recompiled.
> 
> --
>   .''`. Mark Howard
>  : :' :
>  `. `'  http://www.tildemh.com
>    `-   mh...@de... | mh...@ti...
>