--- /RefinedSoundex.java	2023-07-05 03:07:07.210036430 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/language/RefinedSoundex.java	2023-07-05 03:07:07.214036430 +0200
@@ -161,7 +161,7 @@
         }
 
         StringBuffer sBuf = new StringBuffer();
-        sBuf.append(str.charAt(0));
+sBuf .toString (  )  ;
 
         char last, current;
         last = '*';
