On Fri, Apr 25, 2008 at 06:13:29PM +0100, andy wrote:
  
Hello
I tried to run a java-based programme on a Lenny machine. This is what  
happened:
$ java jgraphpad-6.0.4.1-gpl.jar
    
you need to specify that you are trying to run a /jar file. try:
java -jar jgraphpad-6.0.4.1-gpl.jar
  
Exception in thread "main" java.lang.NoClassDefFoundError:  
jgraphpad-6.0.4.1-gpl.jar
  at gnu.java.lang.MainThread.run(libgcj.so.90)
    
the jvm is trying to run a java class called jgraphpad-0.6....jar
which isn't a proper java class... the above -jar switch should fix it
up.
this assumes that you actually have a properly specified jar file that
is designed to be run this way. It may not be. 
You could just unjar it and inspect it for more details. 
jar -xvf jgraph<Tab>
cd into the directory and look around. 
A