jxta.jar problems

Hi 

i am trying to get jxta setup on linux and am doing the following, i have 
downloaded jxta.jar and i am trying to run by typing(below), but getting the 
following error (below). I thought this mean't that i did not have log4j 
installed so i downloaded it and put it in the classpath in the .bashrc file 
(CLASSPATH=$CLASSPATH:/home/suresh/log4j-1.2.8.jar:.; export CLASSPATH ) 

where am i going wrong?

below is what i am typing into a linux shell

> java -jar jxta.jar
> Jxta is now taking off. Please fasten your seat belts and extinguish all 
> smoking materials.
> Uncaught Throwable caught by 'main':
> java.lang.NoClassDefFoundError: org/apache/log4j/Priority
> at net.jxta.impl.peergroup.Boot.main(Boot.java:98)
>