contactData.put(Contact.Field.LastName.name(), "DemoLastName");
contactData.put(Contact.Field.Email.name(), "whatever@whatever.com");
contactData.put(Contact.Field.Company.name(),"Acme Rockets Inc");
final Contact contact = new Contact(contactData);
final ContactServiceAddOperation add = new ContactServiceAddOperation(contact);
final Integer newId = client.call(add);
System.out.println("The new Contact's ID: " + newId);
}