How to send push notifications with Java
Updated on March 29, 2026
Learn how to send Signalgrid push notifications from Java applications
Signalgrid makes it straightforward to send notifications from Java. The platform uses a simple model built around your client_key, a target channel, and a few core fields such as title, body, type, and optional critical.
Java applications can use Signalgrid for monitoring alerts, internal tools, and backend services where reliable notification delivery matters.
What you need
- A Signalgrid account
- Your client key
- A channel token
- Java available in your environment
Basic example
The following example sends a simple notification with Java.
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
String body = "client_key=" + System.getenv("SIGNALGRID_CLIENT_KEY") +
"&channel=" + System.getenv("SIGNALGRID_CHANNEL") +
"&title=Java Notification" +
"&body=Sent from a Java application" +
"&type=INFO";
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create("https://api.signalgrid.co/v1/push"))
.header("Content-Type", "application/x-www-form-urlencoded")
.POST(HttpRequest.BodyPublishers.ofString(body))
.build();
HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body()); Required fields
Field
Description
client_keyAuthenticates the request on behalf of your Signalgrid user
channelThe channel token that should receive the notification
titleShort notification title
bodyMain notification message
typeVisual notification type such as
INFO, WARN, SUCCESS, or CRITcriticalOptional flag for urgent notifications
Environment variables
Keeping credentials outside your code is usually the better move.
export SIGNALGRID_CLIENT_KEY=your_client_key
export SIGNALGRID_CHANNEL=your_channel_tokenExample: Enterprise Integrations
Java applications can use Signalgrid for monitoring alerts, internal tools, and backend services where reliable notification delivery matters.