Service discovery over Majordomo in Java

package guide;

import org.zeromq.ZMsg;

/**
* MMI echo query example
*/
public class mmiecho
{

public static void main(String[] args)
{
boolean verbose = (args.length > 0 && "-v".equals(args[0]));
mdcliapi clientSession = new mdcliapi("tcp://localhost:5555", verbose);

ZMsg request = new ZMsg();

// This is the service we want to look up
request.addString("echo");

// This is the service we send our request to
ZMsg reply = clientSession.send("mmi.service", request);

if (reply != null) {
String replyCode = reply.getFirst().toString();
System.out.printf("Lookup echo service: %s\n", replyCode);
}
else {
System.out.println("E: no response from broker, make sure it's running");
}

clientSession.destroy();
}

}