diff --git a/core/modules/config_translation/lib/Drupal/config_translation/Access/ConfigTranslationOverviewAccess.php b/core/modules/config_translation/lib/Drupal/config_translation/Access/ConfigTranslationOverviewAccess.php
index 1eef1ff..78b10d4 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/Access/ConfigTranslationOverviewAccess.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/Access/ConfigTranslationOverviewAccess.php
@@ -69,7 +69,7 @@ public function access(Route $route, Request $request, AccountInterface $account
       $account->hasPermission('translate configuration') &&
       $mapper->hasSchema() &&
       $mapper->hasTranslatable() &&
-      !$this->sourceLanguage->locked;
+      !$this->sourceLanguage->isocked();
 
     return $access ? static::ALLOW : static::DENY;
   }
diff --git a/core/modules/content_translation/lib/Drupal/content_translation/ContentTranslationHandler.php b/core/modules/content_translation/lib/Drupal/content_translation/ContentTranslationHandler.php
index 778da76..853181d 100644
--- a/core/modules/content_translation/lib/Drupal/content_translation/ContentTranslationHandler.php
+++ b/core/modules/content_translation/lib/Drupal/content_translation/ContentTranslationHandler.php
@@ -101,7 +101,7 @@ public function entityFormAlter(array &$form, array &$form_state, EntityInterfac
       $title = $this->entityFormTitle($entity);
       // When editing the original values display just the entity label.
       if ($form_langcode != $entity_langcode) {
-        $t_args = array('%language' => $languages[$form_langcode]->name, '%title' => $entity->label());
+        $t_args = array('%language' => $languages[$form_langcode]->getName(), '%title' => $entity->label());
         $title = empty($source_langcode) ? $title . ' [' . t('%language translation', $t_args) . ']' : t('Create %language translation of %title', $t_args);
       }
       $form['#title'] = $title;
diff --git a/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
index 21b3150..e80e6b4 100644
--- a/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
+++ b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
@@ -179,7 +179,7 @@ public function submitForm(array &$form, array &$form_state) {
         'id' => $form_state['values']['langcode']
       ));
       $language = language_save($language);
-      drupal_set_message($this->t('The language %language has been created.', array('%language' => $this->t($language->name))));
+      drupal_set_message($this->t('The language %language has been created.', array('%language' => $this->t($language->getName()))));
     }
     $options = array(
       'langcode' => $form_state['values']['langcode'],
diff --git a/core/modules/locale/locale.pages.inc b/core/modules/locale/locale.pages.inc
index 8a07c4c..f7f6111 100644
--- a/core/modules/locale/locale.pages.inc
+++ b/core/modules/locale/locale.pages.inc
@@ -91,7 +91,7 @@ function locale_translation_status_form($form, &$form_state) {
 
     // Build data options for the select table.
     foreach($updates as $langcode => $update) {
-      $title = String::checkPlain($languages[$langcode]->name);
+      $title = String::checkPlain($languages[$langcode]->getName());
       $locale_translation_update_info = array('#theme' => 'locale_translation_update_info');
       foreach (array('updates', 'not_found') as $update_status) {
         if (isset($update[$update_status])) {
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
index 01c3cad..5ac1d16 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
@@ -455,7 +455,7 @@ public function searchFormAlter(array &$form, array &$form_state) {
     $language_list = \Drupal::languageManager()->getLanguages(LanguageInterface::STATE_ALL);
     foreach ($language_list as $langcode => $language) {
       // Make locked languages appear special in the list.
-      $language_options[$langcode] = $language->locked ? t('- @name -', array('@name' => $language->name)) : $language->name;
+      $language_options[$langcode] = $language->islocked() ? t('- @name -', array('@name' => $language->getName())) : $language->getName();
     }
     if (count($language_options) > 1) {
       $form['advanced']['lang-fieldset'] = array(
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 35a07d1..8edb6d6 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -1008,7 +1008,7 @@ function node_block_access(Block $block, $operation, AccountInterface $account,
  */
 function node_feed($nids = FALSE, $channel = array()) {
   global $base_url;
-  $language_content = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT);
+  $language_content = \Drupal::languageManager()->getCurrentLanguage(\Drupal\Core\Language\LanguageInterface::TYPE_CONTENT);
   $rss_config = \Drupal::config('system.rss');
 
   if ($nids === FALSE) {
diff --git a/core/modules/path/lib/Drupal/path/Form/PathFormBase.php b/core/modules/path/lib/Drupal/path/Form/PathFormBase.php
index a9e80c4..75f7cc4 100644
--- a/core/modules/path/lib/Drupal/path/Form/PathFormBase.php
+++ b/core/modules/path/lib/Drupal/path/Form/PathFormBase.php
@@ -102,7 +102,7 @@ public function buildForm(array $form, array &$form_state, $pid = NULL) {
       $languages = \Drupal::languageManager()->getLanguages();
       $language_options = array();
       foreach ($languages as $langcode => $language) {
-        $language_options[$langcode] = $language->name;
+        $language_options[$langcode] = $language->getName();
       }
 
       $form['langcode'] = array(