import io.prometheus.client.Counter; import io.prometheus.client.exporter.HTTPServer; public class SimpleMetricExporter { public static void main(String[] args) throws Exception { Counter requestsCounter = Counter.build() .name("http_requests_total") .labelNames("method", "status") .help("Total HTTP requests") .register(); for (int i = 0; i < 10; i++) { requestsCounter.labels("GET", "200").inc(); } HTTPServer server = new HTTPServer(8080); server.start(); } }