php - ReflectionException error when setting up my own library in Laravel -

i laravel newbie. i'm following tutorial sets custom library verify forms. directory structure setup this:

lara ----->app----->acme----->services                    ----->validators ----->bootstrap ----->public ----->vendor 

i error: reflectionexception class acme\services\tasksvalidator not exist

i suspect it's in taskcontroller starts this:

<?php use \acme\services\taskcreatorservice;  class taskscontroller extends basecontroller{         protected $taskcreator;          public function __construct(taskcreatorservice $taskcreator){             $this->taskcreator = $taskcreator;          }          public function index(){         $tasks = task::with('user')->get();         $users = user::lists('username', 'id'); 

what doing wrong? i've added following in composer.json under autoload

        "psr-0":{             "acme":"app/"         } 

i've run: composer dump-autoload -o

my taskcreatorservice file begins this:

<?php namespace acme\services;  use acme\validators\taskvalidator; use acme\validators\validationexception; use task;  class taskcreatorservice{     protected $validator; 

you requiring

use acme\validators\taskvalidator; 

and using in class:

\acme\services\tasksvalidator (with s)