public class GCMServerJava {
/**
* @param args
*/
public static void main(String[] args) {
Sender sender = new Sender(enter your App id);// app id
Message message = new Message.Builder()
.collapseKey("1")
.timeToLive(3)
.delayWhileIdle(true)
.addData("message",
"this text will be seen in notification bar!!").build();
Result result;
try {
result = sender.send(message,"registration id which client get after registering device with google gcm service", 1);
System.out.println(result.toString());
Message message1 = new Message.Builder()
.build();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}