import java.io.OutputStream;

import java.net.HttpURLConnection;

import java.net.URL;

public class AndroidPush {

/**

* Replace SERVER_KEY with your SERVER_KEY generated from FCM

* Replace DEVICE_TOKEN with your DEVICE_TOKEN

*/

private static String SERVER_KEY = "YOUR_SERVER_KEY";

private static String DEVICE_TOKEN = "YOUR_DEVICE_TOKEN";

/**

* USE THIS METHOD to send push notification

*/

public static void main(String[] args) throws Exception {

String title = "My First Notification";

String message = "Hello, I'm push notification";

sendPushNotification(title, message);

}

/**

* Sends notification to mobile, YOU DON'T NEED TO UNDERSTAND THIS METHOD

*/

private static void sendPushNotification(String title, String message) throws Exception {

String pushMessage = "{\"data\":{\"title\":\"" +

title +

"\",\"message\":\"" +

message +

"\"},\"to\":\"" +

DEVICE_TOKEN +

"\"}";

// Create connection to send FCM Message request.

URL url = new url(/sitelet?url=https%3A%2F%2Fgithub.com%2Faggarwalankush%2Fpush-notification-server%2Fblob%2Fmaster%2F%26quot%3Bhttps%3A%2F%2Ffcm.googleapis.com%2Ffcm%2Fsend%26quot%3B);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestProperty("Authorization", "key=" + SERVER_KEY);

conn.setRequestProperty("Content-Type", "application/json");

conn.setRequestMethod("POST");

conn.setDoOutput(true);

// Send FCM message content.

OutputStream outputStream = conn.getOutputStream();

outputStream.write(pushMessage.getBytes());

System.out.println(conn.getResponseCode());

System.out.println(conn.getResponseMessage());

}

}