Forms in HTML

Hi! Perhaps it is not purely Java question, but still... How do I simulate in Java the sending of input fields to the cgi?

Or perhaps can someone simply explain me what exactly is being posted in this case?

{option value ="val"}text {/option}

{form action = "**********smth*****.cgi" method="post"}

{input type="submit" value=" sss "}{/input}

{=<, }=>

Thanx!