src/share/classes/sun/net/www/protocol/http/Negotiator.java

@@ -74,9 +74,11 @@
 
     public abstract byte[] nextToken(byte[] in) throws IOException;
 
     private static void finest(Exception e) {
         PlatformLogger logger = HttpURLConnection.getHttpLogger();
+        if (logger.isLoggable(PlatformLogger.FINEST)) {
         logger.finest("NegotiateAuthentication: " + e);
     }
+    }
 }