Maple Java style

The fastest path is the OpenTelemetry Java agent. It auto-instruments the JVM with no code changes.

Zero-code: Java agent

curl -sLO https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/latest/download/opentelemetry-javaagent.jar

Inline the endpoint and ingest key as JVM system properties. The agent also reads OTEL_* env vars, but inline -D flags fit the inline-key model. The agent appends /v1/traces, /v1/logs, and /v1/metrics to the base endpoint: