bibhutichakraborty/KafkaDemo ? reverse-engineered prompt

Build me a simple Java project that demonstrates how Kafka works end to end.

I want it to show a basic producer sending messages and a consumer receiving them, with a small, easy to run demo I can launch from my IDE. Keep it straightforward and readable, since this is for learning and testing, not production. If it helps, include a few sample messages and clear console output so I can see what is happening.

Please set it up so I can run the demo locally without much fuss, and add any small README notes I’d need to start it up. If you need to check current setup details or best practices, look up the latest docs online first.