--- old/src/share/classes/java/util/function/UnaryOperator.java	2012-12-04 21:27:03.136643784 -0800
+++ new/src/share/classes/java/util/function/UnaryOperator.java	2012-12-04 21:27:02.932643774 -0800
@@ -32,7 +32,12 @@
  *
  * @since 1.8
  */
-public interface UnaryOperator<T> {
+public interface UnaryOperator<T> extends Function<T, T> {
+
+    @Override
+    public  default T apply(T operand) {
+        return operate(operand);
+    }
 
     /**
      * Returns the result of the operation upon the operand.