unexpected T_PUBLIC error

<?PHP
class Session{

    private static $instance;

    function __construct() 
    {
        session_start();
        echo 'Session object created<BR><BR>';
    }

    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new Session();
        }
        return self::$instance;
    }
}

class MyClass {
    public function upload() {
      // getting all of the post data
      $file = array('image' => Input::file('image'));
      // setting up rules
      $rules = array('image' => 'required',); //mimes:jpeg,bmp,png and for max size max:10000
      // doing the validation, passing post data, rules and the messages
      $validator = Validator::make($file, $rules);
      if ($validator->fails()) {
        // send back to the page with the input data and errors
        return Redirect::to('upload')->withInput()->withErrors($validator);
      }
      else {
        // checking file is valid.
        if (Input::file('image')->isValid()) {
          $destinationPath = 'uploads'; // upload path
          $extension = Input::file('image')->getClientOriginalExtension(); // getting image extension
          $fileName = rand(11111,99999).'.'.$extension; // renameing image
          Input::file('image')->move($destinationPath, $fileName); // uploading file to given path
          // sending back with message
          Session::flash('success', 'Upload successfully'); 
          return Redirect::to('upload');
        }
        else {
          // sending back with error message.
          Session::flash('error', 'uploaded file is not valid');
          return Redirect::to('upload');
        }
      }
    }
}

<?php
/**
* MY_Controller extends CI_Controller
*/
class MY_Controller extends CI_Controller
{

    public $username;

    function __construct()
    {
        parent::__construct();

        $slogin = $this->input->cookie('userblog');
        if (!empty($slogin)) 
        {
            $this->load->library('encrypt');
            $login = $this->encrypt->decode($slogin,ENCRYPT_KEY) ;
            echo 'login is : ' .$login ;
            $login_info = explode('_',$login) ;
            $this->username = $login_info[0] ;
            $is_login = $login_info[1];
            if ( $is_login !='islogin')
            {
                redirrect('login');
            }
        }
        $login = $this->session->userdata('login') ;
        if(!empty($login))
        {
            if ($login != true) 
            {
                redirect('login');
            }
        }
        else
        {
            redirect('login');
        }
    }
}

?>