what is wrong with the logging!!

Hi People,
Anybody can help me with the below problem it is been days that i 
couldn't solve it.I really need some help! Thanks...


 org.apache.commons.logging.LogConfigurationException: 
java.lang.NullPointerException
        at 
org.apache.commons.logging.LogFactory.newFactory(LogFactory.java:558)        
at 
org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:355)        
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:409)
        at mankana.<init>(mankana.java:39)
        at mankana.main(mankana.java:98)
Caused by: java.lang.NullPointerException
        at 
org.apache.commons.logging.LogFactory.newFactory(LogFactory.java:543)


-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl