How to create topics in apache kafka?

Question

What is the bestway to create topics in kafka?

• How many replicas/partitions to be defined when we create topics?

In the new producer API, when i try

Answer 1

You can create a topic programmatically .

public class CreateTopic {
  public static void main(String[] args) throws ExecutionException, InterruptedException {
      Properties config = new Properties();
      config.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
      AdminClient admin = AdminClient.create(config);
      //creating new topic
      System.out.println("-- creating --");
      NewTopic newTopic = new NewTopic("my-new-topic", 1, (short) 1);
      admin.createTopics(Collections.singleton(newTopic));

      //listing
      System.out.println("-- listing --");
      admin.listTopics().names().get().forEach(System.out::println);
  }
}