diff -r 7798e3a5ecf5 -r ebf7c13df6c0 src/share/classes/com/sun/tools/javadoc/ExecutableMemberDocImpl.java
--- a/src/share/classes/com/sun/tools/javadoc/ExecutableMemberDocImpl.java	Fri Mar 04 11:33:37 2011 -0800
+++ b/src/share/classes/com/sun/tools/javadoc/ExecutableMemberDocImpl.java	Fri Mar 04 19:53:03 2011 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -226,7 +226,7 @@
     }
 
     private String makeSignature(boolean full) {
-        StringBuffer result = new StringBuffer();
+        StringBuilder result = new StringBuilder();
         result.append("(");
         for (List<Type> types = sym.type.getParameterTypes(); types.nonEmpty(); ) {
             Type t = types.head;
@@ -251,6 +251,7 @@
     /**
      * Generate a key for sorting.
      */
+    @Override
     CollationKey generateKey() {
         String k = name() + flatSignature() + typeParametersString();
         // ',' and '&' are between '$' and 'a':  normalize to spaces.
@@ -263,6 +264,7 @@
      * Return the source position of the entity, or null if
      * no position is available.
      */
+    @Override
     public SourcePosition position() {
         if (sym.enclClass().sourcefile == null) return null;
         return SourcePositionImpl.make(sym.enclClass().sourcefile,