What tools and libraries did I use in Java to interact with Kafka Topics?

The official Apache Kafka Client library is most commonly used for interacting with Kafka Topics in Java. It provides the Producer and Consumer classes for sending and receiving messages.

Additionally, the following tools and libraries are popular:

• Spring Kafka — integrates Kafka with the Spring Framework, simplifying configuration and message handling.
• Kafka Streams — a library for processing data streams within Kafka.
• Confluent Kafka Client — an extension of the official client with additional features.

Example of a simple producer in Java using the Apache Kafka Client:

Properties props = new Properties();
props.put("bootstrap.servers", "localhost:9092");
props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

KafkaProducer<String, String> producer = new KafkaProducer<>(props);
producer.send(new ProducerRecord<>("my-topic", "key1", "Hello Kafka"));
producer.close();

Thus, for working with Kafka in Java, the official client and wrappers like Spring Kafka are typically used for convenience.