Document doc = Jsoup.connect("http://www.yoururl.com/")
            .data("userName", "your username")
            .data("password", "your password")
            .post();

Response res = Jsoup.connect("http://yourloginURL").data("username", "username", "password", "password").method(Method.POST).execute();
    Map<String, String> loginCookies = res.cookies();

    Document doc1 = Jsoup.connect("http://yourotherURL").cookies(loginCookies).get();