List Kafka Topics via Spring-Kafka

kafka-topics --list is a shell script that just is a wrapper around kafka.admin.TopicCommand class, where you can find the method you are looking for

Alternatively, you can also use the AdminClient#listTopics method

You can list topics like this using Admin Client

    Properties properties = new Properties();
    properties.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");

    AdminClient adminClient = AdminClient.create(properties);

    ListTopicsOptions listTopicsOptions = new ListTopicsOptions();
    listTopicsOptions.listInternal(true);

    System.out.println("topics:" + adminClient.listTopics(listTopicsOptions).names().get());

You are connecting to Zookeeper (2181) instead of Kafka (9092 by default).

The Java kafka clients no longer talk directly to ZK.