diff --git a/appserver/orb/orb-iiop/src/main/java/org/glassfish/enterprise/iiop/impl/GlassFishORBManager.java b/appserver/orb/orb-iiop/src/main/java/org/glassfish/enterprise/iiop/impl/GlassFishORBManager.java
index d07f8fccf25..68b3580d80e 100644
--- a/appserver/orb/orb-iiop/src/main/java/org/glassfish/enterprise/iiop/impl/GlassFishORBManager.java
+++ b/appserver/orb/orb-iiop/src/main/java/org/glassfish/enterprise/iiop/impl/GlassFishORBManager.java
@@ -37,7 +37,7 @@
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
-// Portions Copyright [2016-2022] [Payara Foundation and/or its affiliates]
+// Portions Copyright [2016-2024] [Payara Foundation and/or its affiliates]
 
 package org.glassfish.enterprise.iiop.impl;
 
@@ -952,19 +952,19 @@ private String[] getORBInitRef(String endpoints) {
 
     private String getCorbalocURL(Object[] list) {
 
-        String corbalocURL = "";
+        StringBuilder corbalocURL = new StringBuilder();
         //convert list into corbaloc url
         for (int i = 0; i < list.length; i++) {
             logger.log(Level.INFO, "list[i] ==> {0}", list[i]);
-            if (corbalocURL.equals("")) {
-                corbalocURL = IIOP_URL + ((String) list[i]).trim();
+            if (corbalocURL.length()==0) {
+                corbalocURL.append(IIOP_URL).append(((String) list[i]).trim());
             } else {
-                corbalocURL = corbalocURL + "," +
-                        IIOP_URL + ((String) list[i]).trim();
+                corbalocURL.append(",").append(IIOP_URL).append(((String) list[i]).trim());
             }
         }
-        logger.log(Level.INFO, "corbaloc url ==> {0}", corbalocURL);
-        return corbalocURL;
+        String corbalocURLString = corbalocURL.toString();
+        logger.info(() -> "corbaloc url ==> " + corbalocURLString);
+        return corbalocURLString;
     }
 
     String getIIOPEndpoints() {
diff --git a/appserver/payara-appserver-modules/microprofile/metrics/src/main/java/fish/payara/microprofile/metrics/impl/MetricsServiceImpl.java b/appserver/payara-appserver-modules/microprofile/metrics/src/main/java/fish/payara/microprofile/metrics/impl/MetricsServiceImpl.java
index bfca197d204..bfa17f40dea 100644
--- a/appserver/payara-appserver-modules/microprofile/metrics/src/main/java/fish/payara/microprofile/metrics/impl/MetricsServiceImpl.java
+++ b/appserver/payara-appserver-modules/microprofile/metrics/src/main/java/fish/payara/microprofile/metrics/impl/MetricsServiceImpl.java
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- *    Copyright (c) [2018-2023] Payara Foundation and/or its affiliates. All rights reserved.
+ *    Copyright (c) [2018-2024] Payara Foundation and/or its affiliates. All rights reserved.
  *
  *     The contents of this file are subject to the terms of either the GNU
  *     General Public License Version 2 only ("GPL") or the Common Development
@@ -366,10 +366,11 @@ private static String toName(MetricID metric, String suffix) {
             }
             if (name.indexOf('.') > 0) {
                 String[] words = name.split("\\.");
-                name = "";
+                StringBuilder nameBuilder = new StringBuilder();
                 for (String word : words) {
-                    name += toFirstLetterUpperCase(word);
+                    nameBuilder.append(toFirstLetterUpperCase(word));
                 }
+                name += nameBuilder.toString();
             }
         }
         name = toFirstLetterUpperCase(name);
diff --git a/appserver/payara-appserver-modules/payara-micro-service/src/main/java/fish/payara/appserver/micro/services/asadmin/SendAsadminCommand.java b/appserver/payara-appserver-modules/payara-micro-service/src/main/java/fish/payara/appserver/micro/services/asadmin/SendAsadminCommand.java
index 81f5895cc68..f5a863ce92f 100644
--- a/appserver/payara-appserver-modules/payara-micro-service/src/main/java/fish/payara/appserver/micro/services/asadmin/SendAsadminCommand.java
+++ b/appserver/payara-appserver-modules/payara-micro-service/src/main/java/fish/payara/appserver/micro/services/asadmin/SendAsadminCommand.java
@@ -1,7 +1,7 @@
 /*
  *  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- *  Copyright (c) [2016-2021] Payara Foundation and/or its affiliates. All rights reserved.
+ *  Copyright (c) [2016-2024] Payara Foundation and/or its affiliates. All rights reserved.
  *
  *  The contents of this file are subject to the terms of either the GNU
  *  General Public License Version 2 only ("GPL") or the Common Development
@@ -202,21 +202,23 @@ public void execute(AdminCommandContext context)
                         
                         // Skip if neither verbose or logOutput were selected
                         if (verbose || logOutput) {
-                            String output = "";
+                            StringBuilder output = new StringBuilder();
                             
                             // Combine the success messages into one String
                             for (String successMessage : successMessages) {
-                                output += "\n" + successMessage;
+                                output.append("\n").append(successMessage);
                             }
+
+                            String outputString = output.toString();
                             
                             // Only print out the messages if verbose was chosen
                             if (verbose) {
-                                actionReport.setMessage(output);
+                                actionReport.setMessage(outputString);
                             }
 
                             // Only log the messages if logOutput was chosen
                             if (logOutput) {
-                                Logger.getLogger(SendAsadminCommand.class.getName()).log(Level.INFO, output);
+                                Logger.getLogger(SendAsadminCommand.class.getName()).info(()->outputString);
                             }
                         }