Java newbie

[Ric Moore]

On Sun, 2010-11-14 at 21:41 -0500, Jerry Lapham wrote:
> I'm brand new to running java programs and Superbcalc looks just what I've 
> been looking for - a non-scientific calculator with a "tape."  I can't get it 
> to run, so I sent the following to the author:
> 
> SuperbCalc looks like just the application I've been looking for.  
> Unfortunately, when I try to run it I get
> 
> jerry at JERRY-HP:~/Downloads$ java superbcalc.jar
> Exception in thread "main" java.lang.NoClassDefFoundError: superbcalc/jar
> Caused by: java.lang.ClassNotFoundException: superbcalc.jar
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
> Could not find the main class: superbcalc.jar. Program will exit.
> 
> Is there something I'm missing?  I'm running Kubuntu 10.04 Linux.
> 
>         -Jerry
> 
> It's been over a month with no response.  Anyone here a java expert who could 
> tell me what the error messages mean?

Sure, I think I replied before... what does java -version return for
you? 

wayward4now at iam:/opt$ java -version
java version "1.6.0_22"
Java(TM) SE Runtime Environment (build 1.6.0_22-b04)
Java HotSpot(TM) Client VM (build 17.1-b03, mixed mode, sharing)
wayward4now at iam:/opt$ 

If you see something like open-JDK that ain't the real deal. Ric


-- 
My father, Victor Moore (Vic) used to say:
"There are two Great Sins in the world...
..the Sin of Ignorance, and the Sin of Stupidity.
Only the former may be overcome." R.I.P. Dad.
Linux user# 44256