[Solved] Why does this Kafka producer code fail?@Autowired private KafkaTemplate kafkaTemplate; public void sendMessage() { kafkaTemplate.send(); } | Spring Boot

Spring Boot - Messaging

Why does this Kafka producer code fail?

@Autowired
private KafkaTemplate kafkaTemplate;

public void sendMessage() {
    kafkaTemplate.send();
}

AKafkaTemplate only supports Integer messages

Bsend() requires topic and message parameters

Csend() returns void and cannot be called

DKafkaTemplate must be manually instantiated

Step-by-Step Solution

Solution:

Step 1: Check KafkaTemplate send method signature
send() requires at least topic name and message as parameters.
Step 2: Validate other options
KafkaTemplate is injected by Spring; send() returns a ListenableFuture; it supports String messages as declared.
Final Answer:
send() requires topic and message parameters -> Option B
Quick Check:
send() needs topic and message [OK]

Quick Trick: Always provide topic and message to send() [OK]

Common Mistakes:

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Why does this Kafka producer code fail?