diff --git a/developers.html b/developers.html
index 2c9214794fdf181406cb0a5edf9363d2edfcbee5..b251446faf3e1b501d91e9e782a576df9634ec28 100644
--- a/developers.html
+++ b/developers.html
@@ -930,7 +930,7 @@ Note that the -d switch is necessary for domain users.
           		<ul>
           			<li>
               <pre>
-$<b> java -version</b> &nbsp;&nbsp; # OpenJDK 16
+$<b> java -version</b> &nbsp;&nbsp; # OpenJDK&nbsp;16
 
 openjdk version "16.0.2" 2021-07-20
 OpenJDK Runtime Environment (build 16.0.2+7-67)
@@ -1533,7 +1533,7 @@ need to be connected to the NPS intranet.
           <li>
               Includes
               <a href="https://blogs.apache.org/netbeans" target="_blank">Blog</a>,
-              <a href="https://netbeans.apache.org/download/nb123/index.html" target="_NetBeans">NetBeans&nbsp;12.3&nbsp;features</a>,
+              <a href="https://netbeans.apache.org/download/nb123/index.html" target="_NetBeans">NetBeans&nbsp;12.4&nbsp;features</a>,
               <a href="https://netbeans.apache.org/kb/docs/java" target="_NetBeans">tutorials</a>,
               <a href="https://netbeans.apache.org/community" target="_NetBeans">Community</a>,
               <a href="https://netbeans.apache.org/participate" target="_NetBeans">Participate</a>,
@@ -1600,7 +1600,7 @@ need to be connected to the NPS intranet.
               <code><b>NETBEANS_HOME/etc/netbeans.conf</b></code>
               locations in the NetBeans installation directory tree:
               <br />
-              <code style="color:darkgreen"><b>C:\Program&nbsp;Files\NetBeans12.3\netbeans\etc\netbeans.conf</b></code> (default user settings)
+              <code style="color:darkgreen"><b>C:\Program&nbsp;Files\NetBeans12.4\netbeans\etc\netbeans.conf</b></code> (default user settings)
               <br />
               or, for older versions of NetBeans,
               <br />
@@ -1626,12 +1626,20 @@ need to be connected to the NPS intranet.
               &nbsp;&nbsp;&nbsp;&nbsp;<code style="color:darkgreen"><b>-J-Djavax.xml.bind.context.factory=com.sun.xml.bind.v2.ContextFactory</b></code>
           </li>
           <li>
-              <i>Tomcat supportu under Netbeans 12.3 and OpenJDK 16.</i> 
+              <i>Tomcat support under Netbeans 12.4 and OpenJDK&nbsp;16.</i> 
               Append the following property to
               <code>netbeans_default_options</code> environment variable:
               <br />
               &nbsp;&nbsp;&nbsp;&nbsp;<code style="color:darkgreen"><b>-J--add-exports=java.xml/com.sun.org.apache.xerces.internal.impl.dv.util=ALL-UNNAMED</b></code>
           </li>
+          <li>
+              <i>Java reflection warnings in  OpenJDK&nbsp;16
+                as described in <a href="https://openjdk.java.net/jeps/396" target="_blank">OpenJDK&nbsp;16 Release Notes, JEP 396: Strongly Encapsulate JDK Internals by Default</a>.</i> 
+              Append the following property to
+              <code>netbeans_default_options</code> environment variable:
+              <br />
+              &nbsp;&nbsp;&nbsp;&nbsp;<code style="color:darkgreen"><b>-J--illegal-access=warn</b></code>
+          </li>
           <li>
               <i>(Prior problem,
               <a href="https://netbeans.apache.org/download/nb113/index.html#_hidpi">fixed</a> under NetBeans 11.3)</i>.
@@ -2453,7 +2461,7 @@ netbeans_jdkhome="C:\Program Files\Java\jdk1.8.0_221"</pre>
       <ul>
           <li>
               There is a
-              <a href="https://issues.apache.org/jira/plugins/servlet/mobile#issue/NETBEANS-5602">Netbeans 12.3 problem with Tomcat</a>
+              <a href="https://issues.apache.org/jira/plugins/servlet/mobile#issue/NETBEANS-5602">Netbeans 12.4 problem with Tomcat</a>
               that should be fixed by
               <a href="https://cwiki.apache.org/confluence/display/NETBEANS/Apache+NetBeans+12.4">Netbeans 12.4</a>,
               appearing in late May according to the
@@ -2470,7 +2478,7 @@ netbeans_jdkhome="C:\Program Files\Java\jdk1.8.0_221"</pre>
           </li>
           <li>
               <span style="color:darkorange"><b>Warning, troubleshooting in progress:</b></span>
-              not working in Netbeans&nbsp;12.3, unsuccessful backtracking to Netbeans&nbsp;12.2 and OpenJDK&nbsp;14.02, 
+              not working in Netbeans&nbsp;12.4, unsuccessful backtracking to Netbeans&nbsp;12.2 and OpenJDK&nbsp;14.02, 
               still trying...
           </li>
           <li>
@@ -3076,7 +3084,7 @@ which can lead to the Internet of Things becoming the Web of Things. </i>
             <a href="https://savage.nps.edu/developers.html">https://savage.nps.edu/developers.html</a>
         </blockquote>
         <blockquote>
-            Revised 25 July 2021.
+            Revised 23 August 2021.
         </blockquote>
 
         <p>