KafkaStreamsPlayground
A simplified little example app for using kafka streams to sort messages for a real-world use case. If you're new to Kafka streams and you're Java is rusty... this example should get you far enough to start hacking your own stuff.
I have an example of a simple filter and a branch operation for message sorting within the streaming processor.
You can read the blog post here: http://www.mikeheijmans.com/java/2017/01/17/Kafka-Streaming-Processors-Simplified/