how to make program log in to get access to subscriber only content?

i am a paid subscriber of a website, and i want to write a program that automatically downloads the subscriber-only content and make sense of it automatically (the scale is too large to do it manually).

however, im stuck at the login. how do i make the java program log in to the site so that the program will be able to download the subscriber only content to make sense of it all automatically?

Code :

            <form method="post" action="/user/do_login.html"> 
              <ul> 
                <li class="sic_username"> 
                  <label for="sic_login_username">Username</label> 
                  <input id="sic_login_username" name="name" type="text" class="sic_textbox" /> 
                </li> 
                <li class="sic_password"> 
                  <label for="sic_login_password">Password</label> 
                  <input id="sic_login_password" name="password" type="password" class="sic_textbox" /> 
                </li> 
                <li class="sic_remember"> 
                  <label for="sic_login_remember">Remember</label> 
                  <input id="sic_login_remember" name="remember" type="checkbox" /> 
                </li> 
                <li class="sic_submit"> 
                  <input id="sic_login_submit" type="submit" value="Login" class="sic_logInOut" /> 
                </li> 
              </ul> 
            </form>

thanks.