kafka get partition count for a topic

Question

How can I get number of partitions for any kafka topic from the code. I have researched many links but none seem to work.

Mentioning a few:

http://grokbase.c

Answer 1

Use PartitionList from KafkaConsumer

     //create consumer then loop through topics
    KafkaConsumer consumer = new KafkaConsumer(props);
    List partitions = consumer.partitionsFor(topic);

    ArrayList partitionList = new ArrayList<>();
    System.out.println(partitions.get(0).partition());

    for(int i = 0; i < partitions.size(); i++){
        partitionList.add(partitions.get(i).partition());
    }

    Collections.sort(partitionList);

Should work like a charm. Let me know if there's a simpler way to access Partition List from Topic.