--- a/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/JavadocEnter.java	Fri Dec 16 12:08:46 2016 +0100
+++ b/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/JavadocEnter.java	Fri Dec 16 15:27:34 2016 +0000
@@ -57,11 +57,7 @@
     }
 
     public static void preRegister(Context context) {
-        context.put(enterKey, new Context.Factory<Enter>() {
-               public Enter make(Context c) {
-                   return new JavadocEnter(c);
-               }
-        });
+        context.put(enterKey, (Context.Factory<Enter>)JavadocEnter::new);
     }
 
     protected JavadocEnter(Context context) {