title: Getting an unknown tag warning for f:ajax while using jsf 2
body: <p>I'm using eclipse.  In the WEB-INF/lib folder I have the following jars.</p>
  
  <pre><code>jstl-api-1.2.jar
  jstl-impl-1.2.jar
  myfaces-api-2.0.2.jar
  myfaces-impl.2.0.2.jar
  </code></pre>
  
  <p>I get the following warning</p>
  
  <pre><code>Multiple annotations found at this line:
      - Unknown tag (f:ajax).
      - Unknown tag (f:ajax).
  </code></pre>
  
  <p>.</p>
  
  <pre><code>&lt;%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%&gt;
  &lt;%@ taglib prefix="f"  uri="http://java.sun.com/jsf/core"%&gt;
  &lt;%@ taglib prefix="h"  uri="http://java.sun.com/jsf/html"%&gt;
  &lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"&gt;
  &lt;title&gt;no&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;f:view&gt;
      &lt;h:form id="form1"&gt;
          &lt;h:commandButton value="submit" type="submit" action="#{registrationBean.storeUserId}" &gt;
               &lt;f:ajax render="node1" /&gt;
          &lt;/h:commandButton&gt;
          &lt;br&gt;
          &lt;h:outputText id="node1" value="#{userIdBean.userId}" style="font-weight:bold" /&gt;
      &lt;/h:form&gt;
  &lt;/f:view&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>