Call Rest service from JAVA Core, Post method

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import org.apache.http.HttpResponse;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.StringEntity;

import org.apache.http.impl.client.DefaultHttpClient;

public class SubscriberService {

       public void sendPost() throws Exception {

              try {

                      DefaultHttpClient httpClient = new DefaultHttpClient();

                      HttpPost postRequest = new HttpPost("api url");

                      StringEntity input = new StringEntity(

                                    "{"

                                    + "\"object\":\"value\""

                                    + "}");

                      input.setContentType("application/json");

                      postRequest.setEntity(input);

                      HttpResponse response = httpClient.execute(postRequest);

                      BufferedReader br = new BufferedReader(new InputStreamReader(

                                    (response.getEntity().getContent())));

                      String output;

                      System.out.println("Output from Server .... \n");

                      while ((output = br.readLine()) != null) {

                             System.out.println(output);

                      }

                      httpClient.getConnectionManager().shutdown();

              } catch (MalformedURLException e) {

                      e.printStackTrace();

              } catch (IOException e) {

                      e.printStackTrace();

              }

       }

}