gistfile1.txt

/**
 * Created by vivex on 12/6/15.
 */
@Service
public class NotificationService {

    /**
    * gcmRegId is the id which android app will give to server (one time) 
    **/
    public boolean pushNotificationToGCM(String gcmRegId,String message){
        final String GCM_API_KEY = "sdfadfsdafsdafsdafasdfsdfsdaflsadfd";
        final int retries = 3;
        Sender sender = new Sender(GCM_API_KEY);
        Message msg = new Message.Builder().addData("message",message).build();

        try {
            if(account.getGcmRegId()!=null) {
                Result result = sender.send(msg, gcmRegId, retries);
                /**
                * if you want to send to multiple then use below method
                * send(Message message, List<String> regIds, int retries)
                **/
            

                if (StringUtils.isEmpty(result.getErrorCodeName())) {
                    System.out.println("GCM Notification is sent successfully" + result.toString());
                    return true;
                }

                System.out.println("Error occurred while sending push notification :" + result.getErrorCodeName());

            }
        } catch (InvalidRequestException e) {
            System.out.println("Invalid Request");
        } catch (IOException e) {
            System.out.println("IO Exception");
        }
        return false;

    }
}