super(MessageFormat.format("User name {0} already registered at record id {1}. Maybe forgot to call isRegistered(user) ?", user.getUserName(), user.getUserId()));
}
+ /**
+ * Constructor with already registered user name
+ * <p>
+ * @param userName User name
+ */
+ public UserNameAlreadyRegisteredException (final String userName) {
+ // Call super contructor
+ super(MessageFormat.format("User name {0} already used. Maybe forgot to call isRegistered(user) ?", userName));
+ }
+
}