hazel.rb

class Sample
  include com.hazelcast.core.MessageListener
 
  def onMessage(msg)
    puts "Message received = " + msg
  end
end

sample = com.hazelcast.core.Sample.new
topic = com.hazelcast.core.SampleHazelcast.getTopic "default"
topic.addMessageListener sample
topic.publish "my-message-object"