title: How to change java version and web version on org.eclipse.wst.common.project.facet.core.xml under .settings dir of eclipse project
body: <p>I want to modify org.eclipse.wst.common.project.facet.core.xml under .settings</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
      &lt;faceted-project&gt;
      &lt;fixed facet="wst.jsdt.web"/&gt;
      &lt;installed facet="java" version="1.5"/&gt;
      &lt;installed facet="jst.web" version="2.3"/&gt;
      &lt;installed facet="wst.jsdt.web" version="1.0"/&gt;
  &lt;/faceted-project&gt;
  </code></pre>
  
  <p>I would like to change the above java version to 1.6 and web to 3.0; I could change it manually by opening in a notepad, but, after that from eclipse (kepler) if I try to update from Maven -> update project, it says error "Cannot change version of project facet Dynamic Web Module to 2.3."</p>
  
  <p>How can I make maven to know that I want to create web app with version 3.0 and specified java version.</p>
  
  <p>I'm creating maven project (archetype as webapp).</p>