ping-9.3-java.md

endpoint	ping
lang	java
es_version	9.3
client	co.elastic.clients:elasticsearch-java:9.3.0

Elasticsearch 9.3 ping endpoint (Java example)

Use client.ping() to check whether the Elasticsearch server is reachable.

boolean alive = client.ping().value();

if (alive) {
    System.out.println("Elasticsearch is available");
} else {
    System.out.println("Elasticsearch is not reachable");
}

Startup health check

Use ping at application startup to fail fast if Elasticsearch is unavailable:

if (!client.ping().value()) {
    System.err.println("Cannot connect to Elasticsearch — exiting");
    System.exit(1);
}