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

*** 2063,2073 ****
--- 2063,2075 ----
                      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");
                  }
              }
*** 2220,2230 ****
--- 2222,2234 ----
                          /* 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");
                  }
              }