java.activation module has been removed from Java 11

build.xml

@@ -1503,9 +1503,6 @@
         <patternset refid="useful.tests"/>
       </srcfiles>
     </uptodate>
-    <condition property="javadoc.jaf.module" value="--add-modules java.activation" else="">
-      <isset property="jdk9+"/>
-    </condition>
   </target>
 
   <target name="javadocs" depends="check-javadoc"
@@ -1538,7 +1535,6 @@
       <group title="Optional Types" packages="org.apache.tools.ant.types.optional*"/>
       <group title="Ant Utilities" packages="org.apache.tools.ant.util*"/>
       <classpath refid="tests-classpath"/>
-      <arg line="${javadoc.jaf.module}"/>
     </javadoc>
   </target>
 

manual/install.html

@@ -899,12 +899,15 @@ these tasks available. Please refer to the <a href="#optionalTasks">Installing A
   </tr>
   <tr>
     <td>activation.jar<br/>
-      (included in Java 6 to Java 10 but the <code>java.activation</code> module is deprecated and marked for removal in
-      Java 9 and needs to be enabled explicitly on Java 10)</td>
+      <ul>
+        <li>Included in Java 6 to Java 10 but the <code>java.activation</code> module is deprecated and marked for removal in
+      Java 9 and needs to be enabled explicitly on Java 10.</li>
+       <li>Starting Java 11, the <code>java.activation</code> module has been <a href="http://openjdk.java.net/jeps/320">removed</a> and the jar has to be explicitly made available in the classpath.</li>
+      </ul>
+    </td>
     <td><a href="Tasks/mail.html">mail</a> task with MIME encoding,
       and <em><u>deprecated</u></em> <a href="Tasks/mimemail.html">mimemail</a> task</td>
-    <td><a href="https://github.com/javaee/activation"
-           target="_top">https://www.oracle.com/technetwork/java/javase/jaf-135115.html</a></td>
+    <td><a href="https://github.com/eclipse-ee4j/jaf">https://github.com/eclipse-ee4j/jaf</a></td>
   </tr>
   <tr>
     <td>jdepend.jar</td>