--- jsr166/src/main/java/util/Deque.java	2005/07/18 19:14:17	1.15
+++ jsr166/src/main/java/util/Deque.java	2012/10/21 06:40:20	1.21
@@ -1,11 +1,10 @@
 /*
  * Written by Doug Lea and Josh Bloch with assistance from members of
  * JCP JSR-166 Expert Group and released to the public domain, as explained
- * at http://creativecommons.org/licenses/publicdomain
+ * at http://creativecommons.org/publicdomain/zero/1.0/
  */
 
 package java.util;
-import java.util.*; // for javadoc (till 6280605 is fixed)
 
 /**
  * A linear collection that supports element insertion and removal at
@@ -154,7 +153,7 @@ import java.util.*; // for javadoc (till
  * <tt>Object</tt>.
  *
  * <p>This interface is a member of the <a
- * href="{@docRoot}/../guide/collections/index.html"> Java Collections
+ * href="{@docRoot}/../technotes/guides/collections/index.html"> Java Collections
  * Framework</a>.
  *
  * @author Doug Lea
@@ -162,7 +161,6 @@ import java.util.*; // for javadoc (till
  * @since  1.6
  * @param <E> the type of elements held in this collection
  */
-
 public interface Deque<E> extends Queue<E> {
     /**
      * Inserts the specified element at the front of this deque if it is
@@ -276,7 +274,7 @@ public interface Deque<E> extends Queue<
 
     /**
      * Retrieves, but does not remove, the first element of this deque.
-     * 
+     *
      * This method differs from {@link #peekFirst peekFirst} only in that it
      * throws an exception if this deque is empty.
      *
@@ -534,4 +532,15 @@ public interface Deque<E> extends Queue<
      * @return an iterator over the elements in this deque in proper sequence
      */
     Iterator<E> iterator();
+
+    /**
+     * Returns an iterator over the elements in this deque in reverse
+     * sequential order.  The elements will be returned in order from
+     * last (tail) to first (head).
+     *
+     * @return an iterator over the elements in this deque in reverse
+     * sequence
+     */
+    Iterator<E> descendingIterator();
+
 }