tested under OpenJDK 17.0.1 and Oracle JDK 17.0.1

developers.html

@@ -844,7 +844,6 @@ Note that the -d switch is necessary for domain users.
       </p>
       
       <!--
-      -->
         <hr />
         <p>
               <span style="color:darkorange"><b>Developers warning:</b></span>
@@ -866,6 +865,7 @@ Note that the -d switch is necessary for domain users.
               </blockquote>
         </p>
         <hr />
+      -->
 
       <p>
           To configure Java on your development system:
@@ -882,14 +882,14 @@ Note that the -d switch is necessary for domain users.
               which does not need to be installed separately.
           </li>
           <li>
-            OpenJDK <code style="color:darkgreen"><b>jdk-16</b></code>
+            OpenJDK <code style="color:darkgreen"><b>jdk-17.0.1</b></code>
             is default Java version for Savage projects, used
             under a
             <a href="https://openjdk.java.net/legal/gplv2+ce.html" target="_blank">non-viral open-source license</a>.
           </li>
           <li>
               Oracle &nbsp;&nbsp; &nbsp;
-              <code style="color:darkgreen"><b>jdk-16</b></code>
+              <code style="color:darkgreen"><b>jdk-17.0.1</b></code>
               and
               <code style="color:darkgreen"><b>jdk1.8.0_221</b></code>
               are alternative Java versions used in current development.
@@ -908,13 +908,14 @@ Note that the -d switch is necessary for domain users.
               or
               -->
               <br />
-              &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\openjdk\jdk-16</b></code> &nbsp;&nbsp;&nbsp; # OpenJDK, or
+              &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\openjdk\jdk-17.0.1</b></code> &nbsp;&nbsp;&nbsp; # OpenJDK, or
               <br />
               <!--&nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\jdk-14</b></code> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # Oracle JDK
               <br />-->
-              &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\jdk1.8.0_221</b></code>   &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; # Oracle JDK
-              <br />
-              and (usually inserted at the beginning of an existing PATH, if it already exists)
+              &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\jdk-17.0.1</b></code>   &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;  &nbsp;&nbsp;&nbsp;  &nbsp;&nbsp;&nbsp;  &nbsp;&nbsp; # Oracle JDK
+          </li>
+          <li>
+              Usually inserted at the beginning of existing PATH environment variable:
               <br />
               &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>PATH=.;%JAVA_HOME%\bin;%ANT_HOME%\bin;</b></code>
           </li>
@@ -929,21 +930,22 @@ Note that the -d switch is necessary for domain users.
               Test what version of Java is actually installed and configured for your operating system via console command line.  Examples:
           		<ul>
           			<li>
-              <pre>
-$<b> java -version</b> &nbsp;&nbsp; # OpenJDK&nbsp;16
+                                    <pre>
+$<b> java -version</b> &nbsp;&nbsp; # OpenJDK&nbsp;17
+
+openjdk version "17.0.1" 2021-10-19
+OpenJDK Runtime Environment (build 17.0.1+12-39)
+OpenJDK 64-Bit Server VM (build 17.0.1+12-39, mixed mode, sharing)
 
-openjdk version "16" 2021-03-16
-OpenJDK Runtime Environment (build 16+36-2231)
-OpenJDK 64-Bit Server VM (build 16+36-2231, mixed mode, sharing)
 </pre>
           			</li>
           			<li>
-              <pre>
-$<b> java -version</b> &nbsp;&nbsp; # Oracle JDK 8
+                                    <pre>
+$<b> java -version</b> &nbsp;&nbsp; # Oracle JDK 17
 
-java version "1.8.0_221"
-Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
-Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
+java version "17.0.1" 2021-10-19 LTS
+Java(TM) SE Runtime Environment (build 17.0.1+12-LTS-39)
+Java HotSpot(TM) 64-Bit Server VM (build 17.0.1+12-LTS-39, mixed mode, sharing)
 </pre>
           			</li>
           		</ul>
@@ -1030,7 +1032,7 @@ Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
               <ul>
                 <li>  Extract the contents (including README.txt) for inclusion in the JDK development build, for example
                       <br />
-                      <code style="color:darkgreen"><b>C:\Program Files\Java\jdk1.8.0_221\jre\lib\security</b></code></li>
+                      <code style="color:darkgreen"><b>C:\Program Files\Java\jdk-17.0.1\jre\lib\security</b></code></li>
                 <li>  
                   <a href="https://download.oracle.com/javase/8/docs/technotes/guides/security">Java(TM) Cryptography Architecture (JCA) Reference Guide</a>
                 </li>
@@ -1615,7 +1617,7 @@ need to be connected to the NPS intranet.
               by changing menu <i>Tools&nbsp;&gt;&nbsp;Java&nbsp;Platforms</i>
               and also 
               <code style="color:darkgreen"><b>netbeans.conf</b></code> property
-              <code>netbeans_jdkhome="C:\Program Files\Java\openjdk\jdk-16"</code>
+              <code>netbeans_jdkhome="C:\Program Files\Java\openjdk\jdk-17.0.1"</code>
               (for example).
           </li>
           <li>