final Document res = new PageLoader().load(LOGINPAGE);
final Element username = res.getElementById("UserName");
final Element password = res.getElementById("Password");

System.out.println(username.toString());
System.out.println(password.toString());

<input type="text" id="UserName" name="UserName" class="std-input full center">
<input type="password" id="Password" name="Password" class="std-input full center">