<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>2.8.0</version>
</dependency>
import org.apache.kafka.clients.producer.*;
public class KafkaProducerExample {
public static void main(String[] args) {
Properties properties = new Properties();
properties.put("bootstrap.servers", "localhost:9092");
properties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
properties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
Producer<String, String> producer = new KafkaProducer<>(properties);
String topic = "my-topic";
String message = "Hello, Kafka!";
producer.send(new ProducerRecord<>(topic, message));
producer.close();
}
}
import org.apache.kafka.clients.consumer.*;
public class KafkaConsumerExample {
public static void main(String[] args) {
Properties properties = new Properties();
properties.put("bootstrap.servers", "localhost:9092");
properties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
properties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
Consumer<String, String> consumer = new KafkaConsumer<>(properties);
String topic = "my-topic";
consumer.subscribe(Arrays.asList(topic));
while (true) {
ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(100));
for (ConsumerRecord<String, String> record : records) {
System.out.println("Received message: " + record.value());
}
}
}
}
