Joomla 3 set multi controller tasks

<?php
    // mycomponent.php entry point
    defined('_JEXEC') or die('Restricted access');
    $controller = JControllerLegacy::getInstance('mycomponent');
    $controller->execute(JFactory::getApplication()->input->get('task', 'display'));
    $controller->redirect();
?>

<?php
    //controllers/controllername.php
    defined('_JEXEC') or die('Restricted access');
    class MycomponentControllerControllername extends JControllerLegacy{
        public function display(){
            parent::display();
        }
    }
?>
#url   option=com_mycomponent&task=controllername.display
#it uses de default view