Create a KStream: Java client producer -> Key:Long and Value:SpecificAvro

Create a KStream

Data source: Java client producer
Kafka Streams application with Key:Long and Value:SpecificAvro

Comparable existing example: https://github.com/confluentinc/examples/tree/5.3.0-post/connect-streams-pipeline#example-4-java-client-producer-with-specificavro---keylong-and-valuespecificavro

Start by reviewing the comparable existing example at the linked confluentinc/examples path, then inspect this repository for the nearest Kafka Streams tutorial or recipe. The work is complete when a tutorial creates a KStream from a Java client producer using Long keys and SpecificAvro values, with the example runnable like the referenced one.

Written by the indexing model from the issue text.