<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import joomla controller library
jimport('joomla.application.component.controller');
 
// Get an instance of the controller prefixed by HelloWorld
$controller = JController::getInstance('HelloWorld');
 
// Get the task
$jinput = JFactory::getApplication()->input;
$task = $jinput->get('task', "", 'STR' );
 
// Perform the Request task
$controller->execute($task);
 
// Redirect if set by the controller
$controller->redirect();

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla controller library
jimport('joomla.application.component.controller');
 
/**
 * General Controller of HelloWorld component
 */
class HelloWorldController extends JController
{
        /**
         * display task
         *
         * @return void
         */
        function display($cachable = false, $urlparams = false) 
        {
                // set default view if not set
                $input = JFactory::getApplication()->input;
                $input->set('view', $input->getCmd('view', 'HelloWorlds'));
 
                // call parent behavior
                parent::display($cachable);
        }
}

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla view library
jimport('joomla.application.component.view');
 
/**
 * HelloWorlds View
 */
class HelloWorldViewHelloWorlds extends JView
{
        /**
         * HelloWorlds view display method
         * @return void
         */
        function display($tpl = null) 
        {
                // Get data from the model
                $items = $this->get('Items');
                $pagination = $this->get('Pagination');
 
                // Check for errors.
                if (count($errors = $this->get('Errors'))) 
                {
                        JError::raiseError(500, implode('<br />', $errors));
                        return false;
                }
                // Assign data to the view
                $this->items = $items;
                $this->pagination = $pagination;
 
                // Display the template
                parent::display($tpl);
        }
}

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted Access');
 
// load tooltip behavior
JHtml::_('behavior.tooltip');
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld'); ?>" method="post" name="adminForm">
        <table class="adminlist">
                <thead><?php echo $this->loadTemplate('head');?></thead>
                <tfoot><?php echo $this->loadTemplate('foot');?></tfoot>
                <tbody><?php echo $this->loadTemplate('body');?></tbody>
        </table>
</form>

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted Access');
?>
<tr>
        <th width="5">
                <?php echo JText::_('COM_HELLOWORLD_HELLOWORLD_HEADING_ID'); ?>
        </th>
        <th width="20">
                <input type="checkbox" name="toggle" value="" onclick="checkAll(<?php echo count($this->items); ?>);" />
        </th>                   
        <th>
                <?php echo JText::_('COM_HELLOWORLD_HELLOWORLD_HEADING_GREETING'); ?>
        </th>
</tr>

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted Access');
?>
<?php foreach($this->items as $i => $item): ?>
        <tr class="row<?php echo $i % 2; ?>">
                <td>
                        <?php echo $item->id; ?>
                </td>
                <td>
                        <?php echo JHtml::_('grid.id', $i, $item->id); ?>
                </td>
                <td>
                        <?php echo $item->greeting; ?>
                </td>
        </tr>
<?php endforeach; ?>

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted Access');
?>
<tr>
        <td colspan="3"><?php echo $this->pagination->getListFooter(); ?></td>
</tr>

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import the Joomla modellist library
jimport('joomla.application.component.modellist');
/**
 * HelloWorldList Model
 */
class HelloWorldModelHelloWorlds extends JModelList
{
        /**
         * Method to build an SQL query to load the list data.
         *
         * @return      string  An SQL query
         */
        protected function getListQuery()
        {
                // Create a new query object.           
                $db = JFactory::getDBO();
                $query = $db->getQuery(true);
                // Select some fields
                $query->select('id,greeting');
                // From the hello table
                $query->from('#__helloworld');
                return $query;
        }
}