How to send a POST request ?

Example

try {

   // Construct data

   String data = URLEncoder.encode("key1", "UTF-8") + "=" 

                  + URLEncoder.encode("value1", "UTF-8");

   data += "&" + URLEncoder.encode("key2", "UTF-8") + "="

                  + URLEncoder.encode("value2", "UTF-8");

   // Send data

   URL url = new URL("http://hostname:80/cgi");

   URLConnection conn = url.openConnection();

   conn.setDoOutput(true);

   OutputStreamWriter wr = 

                new OutputStreamWriter(conn.getOutputStream());

   wr.write(data);

   wr.flush();

   // Get the response

   BufferedReader rd = 

      new BufferedReader(new InputStreamReader(conn.getInputStream()));

   String line;

   while ((line = rd.readLine()) != null) {

     // Process line...

   }

   wr.close();

   rd.close();

} catch (Exception e) {

   e.printStackTrace();

}