Method exception

src/java/com/libmailcore/SMTPOperation.java:8–13

Returns error once the operation finished running. It will return null if the operation successfully ran.

()

        successfully ran.
    */
    public MailException exception() {
        if (errorCode() == ErrorCode.ErrorNone) {
            return null;
        }
        return new MailException(errorCode());
    }

    private native int errorCode();