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Re: quick daft question Java app



On Fri, Nov 25, 2011 at 12:43:38PM +0000, Richard wrote:
> On Fri, 25 Nov 2011 12:15:17 +0000
> Darac Marjal <mailinglist@darac.org.uk> wrote:
> 
> > On Fri, Nov 25, 2011 at 10:41:16AM +0000, Richard wrote:
> > > Hi
> > > Gnome3 menu editing is a real PITA.
> > > I found this which I'd like to try
> > > Gnome3_AppMenuEditor.jar 
> > > how do you run this, I've tried jar Gnome3....., but jar is not recognised,
> > > JRE is loaded, but its been so long since I've played with java apps, sorry.
> > 
> > I believe the syntax is "java -jar Gnome3_AppMenuEditor.jar".
> > 
> > Alternatively, if you install the package "jarwrapper", you can execute
> > the file directly by "./Gnome3_AppMenuEditor.jar".
> > 
> > 
> 
> Thanks that did something:-
> 
> root@g8jvm:/home/richard/github# java -jar Gnome3_AppMenuEditor.jar
> Exception in thread "main" java.lang.UnsupportedClassVersionError: Gnome3MenuEditor : Unsupported major.minor version 51.0
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
> 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
> 	at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
> 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
> Could not find the main class: Gnome3MenuEditor. Program will exit.
> 

Google suggests:
http://geekexplains.blogspot.com/2009/01/javalangunsupportedclassversionerror.html

> 
> I did try using jarwrapper but got the same. :(

Yes, because jarwrapper's only automatically doing what you just did.
It's not magic.


-- 
Darac Marjal

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