title: how to import "org.apache.http.client.HttpClient" in Eclipse?
body: <p>I have tried <code>httpcore.jar</code> by following the step <a href="http://hc.apache.org/httpcomponents-core-ga/download.html">here</a>, but when I write <code>import org.apache.http.client.HttpClient</code>, it still can't be found.
  The jar is already downloaded by Maven.</p>
  
  <p>Is <code>httpcore</code> the right lib for importing <code>org.apache.http.client.HttpClient</code>?
  or <code>org.apache.http.client.HttpClient</code> is just used for Android developing?</p>
  
  <p>Another question, what is the difference between <code>org.apache.http.client.HttpClient</code> and <code>org.apache.commons.httpclient.HttpClient</code>?</p>