how to access unix server with an account and password?

[pinkipons]

Hi!
I have a java program that generates an output file. I need to send this file to a unix server in order to process it with another program, get another resultant file and get it back. I don´t know how to access the server with my account and password, the examples I have found only need host's name or IP.

Thanks for your help,
Pinki