title: libraries for JSF (Sun/Oracle Mojarra)
body: <p>I am downloading Sun/Oracle Mojarra implementation of JSF from <a href="http://javaserverfaces.java.net/download.html" rel="noreferrer">http://javaserverfaces.java.net/download.html</a></p>
  
  <p>I downloaded the latest -2.1.9 binary. It comes with only one jar - javax.faces-2.1.9.jar.
  I had a sample project which I believe is using the older 2.0 version, which includes 2 jars - jsf-api.jar and jsf-impl.jar.</p>
  
  <p>I replaced those 2 older jars with the single new jar. It seems like the sample project still works well. </p>
  
  <p>My question:</p>
  
  <ol>
  <li><p>Is there anything else I need to do besides replacing those 2 jars???</p></li>
  <li><p>Any special reason this is this changed from 2 jars to 1? </p></li>
  </ol>
  
  <p>Thanks a lot.</p>
  
  <p>MORE:</p>
  
  <p>I noticed versions in my faces-config.xml</p>
  
  <pre><code>&lt;?xml version="1.0"?&gt;
  &lt;faces-config xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd" version="2.0"&gt;
  &lt;/faces-config&gt;
  </code></pre>
  
  <p>I changed 2.0 and 2_0 to 2.1 and 2_1. The sample project still works. SHould I make these changes?</p>