src/java.base/share/classes/java/util/ArrayDeque.java

*** 315,324 ****
--- 315,325 ----
       *
       * @param c the elements to be inserted into this deque
       * @return {@code true} if this deque changed as a result of the call
       * @throws NullPointerException if the specified collection or any
       *         of its elements are null
+      * @since 9
       */
      public boolean addAll(Collection<? extends E> c) {
          final int s, needed;
          if ((needed = (s = size()) + c.size() + 1 - elements.length) > 0)
              grow(needed);
*** 873,882 ****
--- 874,884 ----
          }
      }
  
      /**
       * @throws NullPointerException {@inheritDoc}
+      * @since 9
       */
      public void forEach(Consumer<? super E> action) {
          Objects.requireNonNull(action);
          final Object[] es = elements;
          for (int i = head, end = tail, to = (i <= end) ? end : es.length;
*** 890,915 ****
--- 892,920 ----
          }
      }
  
      /**
       * @throws NullPointerException {@inheritDoc}
+      * @since 9
       */
      public boolean removeIf(Predicate<? super E> filter) {
          Objects.requireNonNull(filter);
          return bulkRemove(filter);
      }
  
      /**
       * @throws NullPointerException {@inheritDoc}
+      * @since 9
       */
      public boolean removeAll(Collection<?> c) {
          Objects.requireNonNull(c);
          return bulkRemove(e -> c.contains(e));
      }
  
      /**
       * @throws NullPointerException {@inheritDoc}
+      * @since 9
       */
      public boolean retainAll(Collection<?> c) {
          Objects.requireNonNull(c);
          return bulkRemove(e -> !c.contains(e));
      }