--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Fri Dec 16 12:08:46 2016 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Fri Dec 16 15:27:34 2016 +0000
@@ -337,12 +337,7 @@
      * SourceCompleter that delegates to the readSourceFile method of this class.
      */
     protected final Symbol.Completer sourceCompleter =
-            new Symbol.Completer() {
-                @Override
-                public void complete(Symbol sym) throws CompletionFailure {
-                    readSourceFile((ClassSymbol) sym);
-                }
-            };
+            sym -> readSourceFile((ClassSymbol) sym);
 
     protected final ModuleFinder.ModuleInfoSourceFileCompleter moduleInfoSourceFileCompleter =
             fo -> (ModuleSymbol) readSourceFile(parseImplicitFile(fo), null, tl -> {