title: Proxy configuration in Twitter4j
body: <p>I am behind a proxy. I have the proxy details. However I am not sure how to use these details to connect to twitter.</p>
  
  <p>I have looked at the documentations so I am aware of the methods:</p>
  
  <p><code>setHttpProxy(java.lang.String proxyHost, int proxyPort) 
   void setHttpProxyAuth(java.lang.String proxyUser, java.lang.String proxyPass)
  </code></p>
  
  <p>But it is not possible to use them as, Eclipse draws a red line underneath them. 
  Do I need to import or initialise anything before using these methods?</p>