Java tutorial
package com.butler.service; /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ import com.butler.data.pushformat.Header; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectWriter; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.commons.io.IOUtils; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; /** * * @author arsh */ public class PushNotifier implements Runnable { private PushNotifier() { } public static void sendNotification() { PushNotifier notifier = new PushNotifier(); new Thread(notifier).start(); } @Override public void run() { send(); } private void send() { try { String url = "https://android.googleapis.com/gcm/send"; HttpClient client = new DefaultHttpClient(); HttpPost request = new HttpPost(url); request.addHeader("Authorization", "key=AIzaSyCBODt7lH-oPSKiZJ5MJlugTS0BV3U-KGc"); request.addHeader("Content-Type", "application/json"); Header header = new Header(); ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter(); String rawData = ow.writeValueAsString(header); request.setEntity(new StringEntity(rawData)); HttpResponse response = client.execute(request); // System.out.println("response"+IOUtils.toString(response.getEntity().getContent())); } catch (Exception ex) { Logger.getLogger(PushNotifier.class.getName()).log(Level.SEVERE, null, ex); } } }