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

@@ -2063,11 +2063,13 @@
                     break;
                 case KERBEROS:
                     ret = new NegotiateAuthentication(new HttpCallerInfo(authhdr.getHttpCallerInfo(), "Kerberos"));
                     break;
                 case UNKNOWN:
+                    if (logger.isLoggable(PlatformLogger.FINEST)) {
                     logger.finest("Unknown/Unsupported authentication scheme: " + scheme);
+                    }
                 /*fall through*/
                 default:
                     throw new AssertionError("should not reach here");
                 }
             }

@@ -2220,11 +2222,13 @@
                         /* set to false so that we do not try again */
                         tryTransparentNTLMServer = false;
                     }
                     break;
                 case UNKNOWN:
+                    if (logger.isLoggable(PlatformLogger.FINEST)) {
                     logger.finest("Unknown/Unsupported authentication scheme: " + scheme);
+                    }
                 /*fall through*/
                 default:
                     throw new AssertionError("should not reach here");
                 }
             }