I made a module to upload file in form, below is my code snippet, I am able to save file in proper folder but I want to get name of file uploaded so I can save it in database and make reference for it, I tried lots of thing but was not able to do it.

class MyForm extends FormBase {   /**    * {@inheritdoc}    */   public function getFormId() {     return 'my_forms';   }    /**    * {@inheritdoc}    */   public function buildForm(array $form, FormStateInterface $form_state) {      $form['resume'] = array(         '#type' => 'managed_file',         '#title' => t('File'),         '#required' => TRUE,         '#upload_validators'  => array(             'file_validate_extensions' => array('pdf doc docx'),             'file_validate_size' => array(25600000),         ),         '#upload_location' => 'public://myfile/',     );      $form['actions']['#type'] = 'actions';     $form['actions']['submit'] = array(         '#type' => 'submit',         '#value' => $this->t('Submit'),         '#button_type' => 'primary',     );      return $form;   }    /**    * {@inheritdoc}    */     public function validateForm(array &$form, FormStateInterface $form_state) {      }    /**    * {@inheritdoc}    */   public function submitForm(array &$form, FormStateInterface $form_state) {     drupal_set_message($this->t('@can_name ,Your application is being submitted!', array('@can_name' => $form_state->getValue('name'))));     // echo file name here    } }