Jar file problem , please help

Question

Hi guys , i am not sure if i am in the right place to have this post in so i'll give it a try
i know my explanation might be a shot in the dark but i'll try my best
i have made a program using eclips , to send emails using my email , on certain conditions
so when that codition happenes on some class in my program
this class will call the email class and send an email to someone
now the problem is not in the program , because as along as this program is in eclips and i run the program in eclips , everything goes fine , No errors what so ever
but , if i make jar file , using eclips "export"
once i run the program , the program would run , but once the same condition that ihave specified previously happenes , the current class never calls the email class , and no emails would be sent
i am very confused wether
1) it throws a class not found for some wierd reason
2) or the external library that i used to send emails , is not exported
i tried to check the CLASSPATH file and i think everything seems to be fine , so i dont know what the problem is
so in short
if the program is in eclips , every thign goes fine
if the program is a jar file , then it would work fine but once it needs to send an email , it never does and i can still work on the program , but no emails will be sent
thanks please some one help me out with this

Answer 1

for more information here is the senario
because i see that you guys are some how lost because i am not providing enough information
so this is a detailed info of the problem
i have 3 classes
1) mybankmain (jframe)
2) mybankbody (all labels and buttons and events included here)
now: within some events in my program ,
it calls a class called.....
3) myEmail
this class imports two things that are comming from an external jar file , so in short , if the external jar file is not available the program would complain
i run this on windows xp (SP2)
now: if this program runs on eclips , it would do everything it is supposed to do and all kind of calculations will be done and emails will be sent on the conditions that i have specified within the program
if i make a jar file on windows , and i run the jar file , the file would work , all functionalities will work
EXCEPT: sending an email
- either my class is not found
- or external jar file is not found which causes my class not to be able to perform its tasks
i did only one test
which is that i switched the main and i made myEmail as a main and i tried to export the jar file
Result: jar file doesnt work
the way i view whatever inside my jar file , i use Winrar and it would view everythign in the jar file and i see that all my classes are included there
if i open my CLASSPATH , i see that there is a pointer to the external jar file
if i open my manifest : i DO NOT see the exrernal jar file in there but i do see that its pointing to my main class
class main : mybankmain
and there is only the version and signiture
i hope all these additional details would help in determining the problem that ihave been trying to solve for 2 weeks now