Null pointer exception while using YEMAIL utility in AS400

Hi ,
 
We experience issues with an utility "YEMAIL" from time to time which are 
impacting delivery of reports to Clients .It appears to be an issue connecting 
to the mail server and in looking at the program I have  found that the program 
is not handling a Null pointer exception correctly. 
The method  send()  is catching a javax.mail.SendFailedException  but is not 
logging what the actual exception is.  
I would like to add a line
 
        System.out.println("Send Failed Exception  = " +  noSentEx) 
How do I work out a solution to retry if the addresses are null ???
Am I on the right path? Please help me to address this problem!
How to handle Null Pointer exception?
It may be simple, I dont have much experience on Java, Iam connected to AS400. 
Please try to help! Appreciate your early help!!!
Thank you,
Murali. 


                
---------------------------------
Do you Yahoo!?
Friends.  Fun. Try the all-new Yahoo! Messenger