--- jsr166/src/main/java/util/AbstractQueue.java	2003/09/26 11:37:06	1.18
+++ jsr166/src/main/java/util/AbstractQueue.java	2003/11/10 17:31:18	1.22
@@ -27,6 +27,7 @@ package java.util;
  *
  * @since 1.5
  * @author Doug Lea
+ * @param <E> the type of elements held in this collection
  */
 public abstract class AbstractQueue<E>
     extends AbstractCollection<E>
@@ -101,4 +102,43 @@ public abstract class AbstractQueue<E>
         while (poll() != null)
             ;
     }
+
+    /**
+     * Adds all of the elements in the specified collection to this
+     * queue.  Attempts to addAll of a queue to itself result in
+     * <tt>IllegalArgumentException</tt>. Further, the behavior of
+     * this operation is undefined if the specified collection is
+     * modified while the operation is in progress.
+     *
+     * <p>This implementation iterates over the specified collection,
+     * and adds each element returned by the iterator to this
+     * collection, in turn.  A runtime exception encountered while
+     * trying to add an element (including, in particular, a
+     * <tt>null</tt> element) may result in only some of the elements
+     * having been successfully added when the associated exception is
+     * thrown.
+     *
+     * @param c collection whose elements are to be added to this collection.
+     * @return <tt>true</tt> if this collection changed as a result of the
+     *         call.
+     * @throws NullPointerException if the specified collection or
+     * any of its elements are null.
+     * @throws IllegalArgumentException if c is this queue.
+     * 
+     * @see #add(Object)
+     */
+    public boolean addAll(Collection<? extends E> c) {
+        if (c == null)
+            throw new NullPointerException();
+        if (c == this)
+            throw new IllegalArgumentException();
+	boolean modified = false;
+	Iterator<? extends E> e = c.iterator();
+	while (e.hasNext()) {
+	    if (add(e.next()))
+		modified = true;
+	}
+	return modified;
+    }
+
 }