title: httpclient jar conflicts.How to fix it?
body: <p>//This is my code and i am working behind proxy ...   </p>
  
  <pre><code>import org.apache.commons.io.IOUtils;
  import org.apache.http.HttpHost;
  import org.apache.http.HttpResponse;
  import org.apache.http.client.HttpClient;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.impl.client.DefaultHttpClient;
  import org.apache.http.impl.client.HttpClients;
  import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
  
  {
  HttpHost proxy = new HttpHost("proxyhost", 8082); 
  DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
  HttpClient client = HttpClients.custom().setRoutePlanner(routePlanner).build();
  HttpResponse response = client.execute(request);}
  </code></pre>
  
  <p><strong>//Following error appears on my console</strong></p>
  
  <pre><code> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/ssl/SSLContexts
      at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:966)
      at TwitterFeeds.main(TwitterFeeds.java:40)
      Caused by: java.lang.ClassNotFoundException: org.apache.http.ssl.SSLContexts
      at java.net.URLClassLoader$1.run(Unknown Source)
      at java.net.URLClassLoader$1.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      ... 2 more
  </code></pre>
  
  <p><strong>I am using following jars</strong>        </p>
  
  <pre><code>httpclient-4.5.2.jar
  httpcore-4.3.jar
  </code></pre>