Hi, Please review the change in specification of List.sort to state the sort must be stable (CSR is already approved): Thanks, Paul. diff -r e0041b182e31 src/java.base/share/classes/java/util/List.java --- a/src/java.base/share/classes/java/util/List.java Wed Nov 08 10:27:10 2017 -0800 +++ b/src/java.base/share/classes/java/util/List.java Thu Nov 16 13:47:46 2017 -0800 @@ -442,7 +442,8 @@ /** * Sorts this list according to the order induced by the specified - * {@link Comparator}. + * {@link Comparator}. The sort is <i>stable</i>: this method must not + * reorder equal elements. * * <p>All elements in this list must be <i>mutually comparable</i> using the * specified comparator (that is, {@code c.compare(e1, e2)} must not throw