Bug#1098712: jfractionlab: Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version;

[Julien Plissonneau Duquène]

Hi,

I could not reproduce this issue on a clean install of bookworm so I 
will lower the severity (tried on xfce/X11 and gnome/wayland).

Could you please provide the output of the following commands on the 
affected system to make sure the issue is not caused by a specific JDK?
- `ls -l /usr/lib/jvm`
- `update-alternatives --list java`
- `echo $JAVA`
- `echo $JAVA_HOME`

Best regards,

-- 
Julien Plissonneau Duquène