diff -r 7797472a9ed5 -r cabe410a7a5c langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java
--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java	Wed Jan 25 10:43:41 2017 -0800
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java	Thu Jan 26 14:11:38 2017 +0100
@@ -1628,7 +1628,7 @@
     }
 
     @DefinedBy(Api.ANNOTATION_PROCESSING)
-    public Filer getFiler() {
+    public JavacFiler getFiler() {
         return filer;
     }