---
title: "Producing messages"
description: "Producing messages — Java BabelQueue SDK (1.x)."
source: https://babelqueue.com/docs/babelqueue-java/1.x/producing-messages/
updated: 2026-06-06T00:00:00.000Z
---

# Producing messages

Build the canonical envelope with `EnvelopeCodec.make`, encode it to JSON with
`EnvelopeCodec.encode`, then publish the bytes with your own broker client.

```java
import com.babelqueue.*;
import java.util.Map;

Envelope env = EnvelopeCodec.make(
    "urn:babel:orders:created",
    Map.of("order_id", 1042L, "amount", 99.90),
    "orders",
    null);

String body = EnvelopeCodec.encode(env); // compact UTF-8 JSON
// jedis.rpush("queues:orders", body);
//   /  channel.basicPublish("", "orders", props, body.getBytes(StandardCharsets.UTF_8));
```

`encode` produces the canonical `schema_version: 1` envelope, with `meta.lang`
set to `"java"`:

```json
{
  "job": "urn:babel:orders:created",
  "trace_id": "7b3f9c2a-e41d-4f88-9b2a-1c0d5e6f7a8b",
  "data": { "order_id": 1042, "amount": 99.90 },
  "meta": { "id": "f1e2d3c4-b5a6-4789-90ab-cdef01234567", "queue": "orders", "lang": "java", "schema_version": 1, "created_at": 1749132727000 },
  "attempts": 0
}
```

Next: [Consuming messages](/docs/babelqueue-java/1.x/consuming-messages/).