how to add roster in xmpp using smack api

In last article we have learn how to login on xmpp server using smack api . Now In this article we will learn how to add friends( roster ) in buddy using smack api.For add roster in xmpp first you should make two account. See It how to resister on xmpp server if you do not know how to register user on xmpp server. after that you can send roster request using below code . 


package com.javaproficiency.demo;

import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.Roster.SubscriptionMode;
import org.jivesoftware.smack.RosterEntry;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Presence;

public class AddRoster {

 public static void main(String[] args) {

   AddRoster addRoster = new AddRoster();
 
XMPPConnection connection = addRoster.Connect();
try {

                     // user yogesh login on xmpp server
connection.login("yogesh@localhost","123");
System.out.println("Login");

           Roster roster = connection.getRoster();
           // yogesh send roster request to shivam
           roster.createEntry("shivam@localhost","myking",null);

           System.out.println(" send roster request");
           connection.disconnect();

} catch (XMPPException e) {

e.printStackTrace();
}
}


public XMPPConnection Connect() {
 
  ConnectionConfiguration config = new ConnectionConfiguration(
  "localhost", 5222);

  /*
  * ConnectionConfiguration config = new ConnectionConfiguration(
  * "192.163.2.200", 5222);
  */
  XMPPConnection connection = new XMPPConnection(config);
  try {
  connection.connect();
  } catch (XMPPException e) {
 
  e.printStackTrace();
  }
  return connection;
  }


}

After execution  of this code you can see this output :

 Login

 

send roster request

And