--- old/src/share/classes/java/lang/Readable.java	2013-02-05 13:59:14.000000000 -0800
+++ new/src/share/classes/java/lang/Readable.java	2013-02-05 13:59:14.000000000 -0800
@@ -34,7 +34,7 @@
  *
  * @since 1.5
  */
-
+@FunctionalInterface
 public interface Readable {
 
     /**
@@ -51,5 +51,4 @@
      * @throws java.nio.ReadOnlyBufferException if cb is a read only buffer
      */
     public int read(java.nio.CharBuffer cb) throws IOException;
-
 }