gistfile1.txt

Here is my public file code
<?php

/**
 * The public-facing functionality of the plugin.
 *
 * @link       
 * @since      1.0.0
 *
 * @package    plugin_name
 * @subpackage plugin_name/public
 */

/**
 * The public-facing functionality of the plugin.
 *
 * Defines the plugin name, version, and two examples hooks for how to
 * enqueue the admin-specific stylesheet and JavaScript.
 *
 * @package    plugin_name
 * @subpackage plugin_name/public
 * @author     Shahzeb <sftranna@gmail.com>
 */
class plugin_name_Public {

	/**
	 * The ID of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.0
	 * @param      string    $plugin_name       The name of the plugin.
	 * @param      string    $version    The version of this plugin.
	 */
	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version = $version;

	}

	/**
	 * Register the stylesheets for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_styles() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in plugin_name_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The plugin_name_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/ec-authorizenet-public.css', array(), $this->version, 'all' );

	}

	/**
	 * Register the JavaScript for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_scripts() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in plugin_name_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The plugin_name_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

		wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/ec-authorizenet-public.js', array( 'jquery' ), $this->version, false );

	}
        public function define_hooks() {
            $this->loader->add_shortcode( "testShortcode", $this->plugin_name, "shortcode_function", $priority = 10, $accepted_args = 2 );
        }
        
        /*public function shortcode_function() {
            add_shortcode( 'nowhiring', array( $this, 'list_openings' ) );
            add_shortcode( 'nowhiring-howtoapply', array( $this, 'how_to_apply' ) );
	} // register_shortcodes()*/
        public function shortcode_function(){
            echo 'Test the plugin';
        }


}


and  loader file is 
<?php

/**
 * Register all actions and filters for the plugin
 *
 * @link       http://ecarobar.com/
 * @since      1.0.0
 *
 * @package    plugin_name
 * @subpackage plugin_name/includes
 */

/**
 * Register all actions and filters for the plugin.
 *
 * Maintain a list of all hooks that are registered throughout
 * the plugin, and register them with the WordPress API. Call the
 * run function to execute the list of actions and filters.
 *
 * @package    plugin_name
 * @subpackage plugin_name/includes
 * @author     Shahzeb <sftranna@gmail.com>
 */
class plugin_name_Loader {

	/**
	 * The array of actions registered with WordPress.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $actions    The actions registered with WordPress to fire when the plugin loads.
	 */
	protected $actions;

	/**
	 * The array of filters registered with WordPress.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $filters    The filters registered with WordPress to fire when the plugin loads.
	 */
	protected $filters;
        
        /**
	 * The array of shortcodes registered with WordPress.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $shortcodes    The shortcodes registered with WordPress to fire when the plugin loads.
	 */
	protected $shortcodes;

	/**
	 * Initialize the collections used to maintain the actions and filters.
	 *
	 * @since    1.0.0
	 */
	public function __construct() {

		$this->actions = array();
		$this->filters = array();
                $this->shortcodes = array();

	}

	/**
	 * Add a new action to the collection to be registered with WordPress.
	 *
	 * @since    1.0.0
	 * @param    string               $hook             The name of the WordPress action that is being registered.
	 * @param    object               $component        A reference to the instance of the object on which the action is defined.
	 * @param    string               $callback         The name of the function definition on the $component.
	 * @param    int                  $priority         Optional. he priority at which the function should be fired. Default is 10.
	 * @param    int                  $accepted_args    Optional. The number of arguments that should be passed to the $callback. Default is 1.
	 */
	public function add_action( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
		$this->actions = $this->add( $this->actions, $hook, $component, $callback, $priority, $accepted_args );
	}

	/**
	 * Add a new filter to the collection to be registered with WordPress.
	 *
	 * @since    1.0.0
	 * @param    string               $hook             The name of the WordPress filter that is being registered.
	 * @param    object               $component        A reference to the instance of the object on which the filter is defined.
	 * @param    string               $callback         The name of the function definition on the $component.
	 * @param    int                  $priority         Optional. he priority at which the function should be fired. Default is 10.
	 * @param    int                  $accepted_args    Optional. The number of arguments that should be passed to the $callback. Default is 1
	 */
	public function add_filter( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
		$this->filters = $this->add( $this->filters, $hook, $component, $callback, $priority, $accepted_args );
	}
        
         /**
        * Add a new shortcode to the collection to be registered with WordPress
        *
        * @since     1.0.0
        * @param     string        $tag           The name of the new shortcode.
        * @param     object        $component      A reference to the instance of the object on which the shortcode is defined.
        * @param     string        $callback       The name of the function that defines the shortcode.
        */
        
        public function add_shortcode( $tag, $component, $callback, $priority = 10, $accepted_args = 2 ) {
            $this->shortcodes = $this->add( $this->shortcodes, $tag, $component, $callback, $priority, $accepted_args );
        }

	/**
	 * A utility function that is used to register the actions and hooks into a single
	 * collection.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @param    array                $hooks            The collection of hooks that is being registered (that is, actions or filters).
	 * @param    string               $hook             The name of the WordPress filter that is being registered.
	 * @param    object               $component        A reference to the instance of the object on which the filter is defined.
	 * @param    string               $callback         The name of the function definition on the $component.
	 * @param    int                  $priority         The priority at which the function should be fired.
	 * @param    int                  $accepted_args    The number of arguments that should be passed to the $callback.
	 * @return   array                                  The collection of actions and filters registered with WordPress.
	 */
	private function add( $hooks, $hook, $component, $callback, $priority, $accepted_args ) {

		$hooks[] = array(
			'hook'          => $hook,
			'component'     => $component,
			'callback'      => $callback,
			'priority'      => $priority,
			'accepted_args' => $accepted_args
		);

		return $hooks;

	}

	/**
	 * Register the filters and actions with WordPress.
	 *
	 * @since    1.0.0
	 */
	public function run() {

		foreach ( $this->filters as $hook ) {
			add_filter( $hook['hook'], array( $hook['component'], $hook['callback'] ), $hook['priority'], $hook['accepted_args'] );
		}

		foreach ( $this->actions as $hook ) {
			add_action( $hook['hook'], array( $hook['component'], $hook['callback'] ), $hook['priority'], $hook['accepted_args'] );
		}
                
                foreach ( $this->shortcodes as $hook ) {
                    add_shortcode(  $hook['hook'], array( $hook['component'], $hook['callback'] ), $hook['priority'], $hook['accepted_args'] );
                }

	}

}

multiple shortcodes wont work