diff --git a/developers.html b/developers.html
index 4fdc77e507ff454fa7643e21d35445550406e7fb..29d8c422f82a09eb53c0289412b1e36fb0fa9402 100644
--- a/developers.html
+++ b/developers.html
@@ -851,14 +851,14 @@ 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-15.0.2</b></code>
+              OpenJDK <code style="color:darkgreen"><b>jdk-16</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-15.0.2</b></code>
+              <code style="color:darkgreen"><b>jdk-16</b></code>
               and
               <code style="color:darkgreen"><b>jdk1.8.0_221</b></code>
               are alternative Java versions used in current development.
@@ -876,7 +876,7 @@ 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-15.0.2</b></code>
+              &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\openjdk\jdk-16</b></code>
               <br />
               &nbsp;&nbsp;&nbsp;&nbsp; <code style="color:darkgreen"><b>JAVA_HOME=C:\Program Files\Java\jdk-14</b></code>
               <br />
@@ -890,11 +890,12 @@ Note that the -d switch is necessary for domain users.
           		<ul>
           			<li>
               <pre>
-$<b> java -version</b> &nbsp;&nbsp; # OpenJDK 15
+$<b> java -version</b> &nbsp;&nbsp; # OpenJDK 16
+
+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)
 
-openjdk version "15.0.2" 2021-01-19
-OpenJDK Runtime Environment (build 15.0.2+7-27)
-OpenJDK 64-Bit Server VM (build 15.0.2+7-27, mixed mode, sharing)
 </pre>
           			</li>
           			<li>
@@ -916,6 +917,7 @@ Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
           </li>
           <li>
               Summaries of Java language feature improvements:
+              <a href="https://openjdk.java.net/projects/jdk/16" target="_blank">JDK&nbsp;16</a>,
               <a href="https://openjdk.java.net/projects/jdk/15" target="_blank">JDK&nbsp;15</a>,
               <a href="https://openjdk.java.net/projects/jdk/14" target="_blank">JDK&nbsp;14</a>,
               <a href="https://openjdk.java.net/projects/jdk/13" target="_blank">JDK&nbsp;13</a>,
@@ -925,7 +927,7 @@ Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
               <a href="https://openjdk.java.net/projects/jdk9" target="_blank">JDK&nbsp;9</a>.
           </li>
           <li>
-              <a href="https://docs.oracle.com/en/java/javase/15" target="_blank">JDK 15 Javadoc Documentation</a>
+              <a href="https://docs.oracle.com/en/java/javase/16" target="_blank">JDK 16 Javadoc Documentation</a>
               is useful.
               <a href="https://docs.oracle.com/javase/8/docs/api" target="_blank">Java 8 Javadoc</a>
               is also online.
@@ -1568,7 +1570,7 @@ 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-15.0.2"</code>
+              <code>netbeans_jdkhome="C:\Program Files\Java\openjdk\jdk-16"</code>
               (for example).
           </li>
           <li>