xmpp - Registering User using Smack 4.1.3 -

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we building chat client in java , using smack 4.1.3. noticed there huge change in smack apis after smack 4.0 , registrations examples available on internet not working smack 4.1.3. not getting write apis register user. may give sample codes. in advance...

this connects ejabberd server smack 4.1.3. 

   xmpptcpconnectionconfiguration config = xmpptcpconnectionconfiguration.builder()             .setusernameandpassword("testuser", "pass")             .setservicename("example.com")             .sethost("example.com")             .setresource("test")             .setsecuritymode(xmpptcpconnectionconfiguration.securitymode.disabled)             .setport(5222)             .build();      saslmechanism mechanism = new sasldigestmd5mechanism();     saslauthentication.registersaslmechanism(mechanism);     saslauthentication.blacklistsaslmechanism("scram-sha-1");     saslauthentication.unblacklistsaslmechanism("digest-md5");      abstractxmppconnection con = new xmpptcpconnection(config);     try {         con.connect();         con.login();     } catch (exception ex) {         system.out.println(ex.getcause() + " " + ex.getmessage());         logger.getlogger(redcore.class.getname()).log(level.severe, null, ex);      }

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