Bug 573744 - N&N for 4.20

Copy Java 16 entry from news repo

Change-Id: I46d742318e48e048129a5f0ebe0bb720ba03da65
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.common/+/181185
Tested-by: Lakshmi P Shanmugam <lshanmug@in.ibm.com>
Reviewed-by: Lakshmi P Shanmugam <lshanmug@in.ibm.com>
diff --git a/bundles/org.eclipse.jdt.doc.user/topics_WhatsNew.xml b/bundles/org.eclipse.jdt.doc.user/topics_WhatsNew.xml
index cb3934b..96928c6 100644
--- a/bundles/org.eclipse.jdt.doc.user/topics_WhatsNew.xml
+++ b/bundles/org.eclipse.jdt.doc.user/topics_WhatsNew.xml
@@ -4,7 +4,7 @@
 <!-- Define topics for the What's New -->
 <!-- ================================ -->
 <toc label="What's New">
-	<!--topic href="whatsNew/jdt_whatsnew.html#JavaXX"                label="Java XX Support"/-->
+	<topic href="whatsNew/jdt_whatsnew.html#Java16"                label="Java 16 Support"/>
 	<topic href="whatsNew/jdt_whatsnew.html#JUnit"                 label="JUnit"/>
 	<topic href="whatsNew/jdt_whatsnew.html#JavaEditor"            label="Java Editor"/>
 	<topic href="whatsNew/jdt_whatsnew.html#JavaViewsAndDialogs"   label="Java Views and Dialogs"/>
diff --git a/bundles/org.eclipse.jdt.doc.user/whatsNew/jdt_whatsnew.html b/bundles/org.eclipse.jdt.doc.user/whatsNew/jdt_whatsnew.html
index ca0d2f9..84ccbfd 100644
--- a/bundles/org.eclipse.jdt.doc.user/whatsNew/jdt_whatsnew.html
+++ b/bundles/org.eclipse.jdt.doc.user/whatsNew/jdt_whatsnew.html
@@ -26,7 +26,7 @@
 for the 4.20 release of Eclipse.
 They are grouped into:</p>
 <ul> <!-- NOTE: Sync ../topics_WhatsNew.xml with this! -->
-  	<!--li><a href="#JavaXX">Java&trade; XX Support</a></li-->
+  	<li><a href="#Java16">Java&trade; 16 Support</a></li>
   	<li><a href="#JUnit">JUnit</a></li>
 	<li><a href="#JavaEditor">Java Editor</a></li>
 	<li><a href="#JavaViewsAndDialogs">Java Views and Dialogs</a></li>
@@ -48,15 +48,33 @@
 </colgroup>
 <tbody>
 
-  <!-- ******************* Java XX Support ************************************* -->
-  <!--
+ <!-- ******************* Java 16 Support ************************************* -->
   <tr>
-    <td id="JavaXX" class="section" colspan="2">
-    <h2>Java&trade; XX Support </h2>
-    </td>
+    <td id="Java16" class="section" colspan="2">
+    <h2>Java&trade; 16 Support </h2></td>
   </tr>
-  -->
-  <!-- ******************* End of Java XX Support ************************************* -->
+   <tr id="Java_16"> <!-- https://bugs.eclipse.org/bugs/show_bug.cgi?id=565620 -->
+      <td class="title">Java 16</td>
+      <td class="content">
+          <a href="http://jdk.java.net/16/">Java 16</a> is out and Eclipse JDT supports Java 16 in 4.20. 
+          <p></p>
+          <p>
+          The release notably includes the following Java 16 features:
+           <br/>
+           <a href="https://openjdk.java.net/jeps/394"> JEP 394: Pattern Matching for Instanceof (Final)</a>.
+           <br/>
+           <a href="https://openjdk.java.net/jeps/395"> JEP 395: Records (Final)</a>.
+           <br/>
+           <a href="https://openjdk.java.net/jeps/397"> JEP 397: Sealed Classes (Second Preview)</a>.
+           </p>
+           <p>
+           Please note that preview option should be on for <a href="http://openjdk.java.net/projects/jdk/16/"> preview language features</a>.
+           For an informal introduction of the support, 
+           please refer to <a href="https://wiki.eclipse.org/Java16/Examples"> Java 16 Examples wiki</a>. 
+           </p>
+      </td>
+  </tr>
+  <!-- ******************* End of Java 16 Support ************************************* -->
 
   <!-- ******************* JUnit ************************************* -->
   <tr>