src/java.base/share/classes/java/util/concurrent/ConcurrentLinkedDeque.java

*** 1567,1592 ****
--- 1567,1595 ----
          initHeadTail(h, t);
      }
  
      /**
       * @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));
      }
*** 1607,1616 ****
--- 1610,1620 ----
          return removed;
      }
  
      /**
       * @throws NullPointerException {@inheritDoc}
+      * @since 9
       */
      public void forEach(Consumer<? super E> action) {
          Objects.requireNonNull(action);
          E item;
          for (Node<E> p = first(); p != null; p = succ(p))