Jar file execution problem

Hello friends,
I have a project folder in which i have 4 packages
application
ui
controller
model and
a folder Datafile containing project related xml and text files
my main class is in application package
I am creating a jar file of my whole project folder in Eclipse environment, using the main class as TheApplication in application package. I am able to generate the jar file but unable to execute it.
When I tried to execute it from command prompt it is giving me an error saying no main,
Please tell me what I am doing wrong, and suggest me a solution
Thanks in advance

ya, You are required to put an entry in Malifest file.
you need to add Main-Class <your class name with which you need to start ur application
Wasn't this already shown in reply #7?> Yes it was, But as he said, even though he is getting the same problem.. So. I tried to recall him that, that class should the starting point to the application & it should be public & it should have public method.. And is not mentioned in that reply #7
I guess you got my point now.

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