title: Several ports (8005, 8080, 8009) required by Tomcat Server at localhost are already in use
body: <p>I'm getting the following error when I try to run a simple JSP program on Tomcat in Eclipse. </p>
  
  <blockquote>
    <p>Several ports (8005, 8080, 8009) required by Tomcat v6.0 Server at localhost are already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).</p>
  </blockquote>
  
  <p>How is this caused and how can I solve it?</p>