How to create a war file of a project

hi,
I have a project, in my project i have used file to read & write data
from file, i have used Ecllipse to build this project. now how i will
create war file in Ecllipse & ho i will run it? IS there anyone who can
help me? Please help me..
With reagards
Nahar

hi,
I m using following version of Ecllipse :lomboz-wtp-emf-gef-jem-eclipse-SDK-3.1.2-win32. With this how i will build war file of project? can u give me solution?
With regards
Nahar

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