--- jsr166/src/main/java/util/PriorityQueue.java	2003/08/24 23:31:53	1.29
+++ jsr166/src/main/java/util/PriorityQueue.java	2003/08/25 19:27:54	1.31
@@ -56,6 +56,8 @@
 public class PriorityQueue<E> extends AbstractQueue<E>
     implements Queue<E>, java.io.Serializable {
 
+    private static final long serialVersionUID = -7720805057305804111L;
+
     private static final int DEFAULT_INITIAL_CAPACITY = 11;
 
     /**