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[Programmatic subscription] Java example #2486

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Jun 2, 2022
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[Programmatic subscription] Java example #2486

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14 changes: 13 additions & 1 deletion ...ntent/en/developing-applications/building-blocks/pubsub/subscription-methods.md
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Expand Up @@ -204,7 +204,19 @@ public async Task<ActionResult<Stock>> HandleCheckout(Checkout checkout, [FromSe
{{% codetab %}}

```java

private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();

@Topic(name = "checkout", pubsubName = "order_pub_sub")
@PostMapping(path = "/orders")
public Mono<Void> handleMessage(@RequestBody(required = false) CloudEvent<String> cloudEvent) {
return Mono.fromRunnable(() -> {
try {
System.out.println("Subscriber received: " + cloudEvent.getData());
System.out.println("Subscriber received: " + OBJECT_MAPPER.writeValueAsString(cloudEvent));
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} catch (Exception e) {
throw new RuntimeException(e);
}
});
```

{{% /codetab %}}
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