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

@@ -315,10 +315,11 @@
      *
      * @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);

@@ -873,10 +874,11 @@
         }
     }
 
     /**
      * @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;

@@ -890,26 +892,29 @@
         }
     }
 
     /**
      * @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));
     }