How to read messages from the beginning of Kafka queue (programmatically)?

When Kafka Consumer is launched from terminal, it is possible to set --from-beginning, so that the consumer read messages from the beginning of a Kafka queue.

~/kafka/bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic TutorialTopic --from-beginning

However, how can I set this parameter in Scala (or Java)? This is my sample ConsumerConfig:

 def createConsumerConfig(zookeeper: String, groupId: String): ConsumerConfig = { val props = new Properties() props.put("zookeeper.connect", zookeeper); props.put("group.id", groupId); props.put("auto.offset.reset", "largest"); props.put("zookeeper.session.timeout.ms", "400"); props.put("zookeeper.sync.time.ms", "200"); props.put("auto.commit.interval.ms", "1000"); val config = new ConsumerConfig(props) config }