#vulnerable code 
                                private void sendMsg(final DefaultMQAdminExt defaultMQAdminExt, final DefaultMQProducer defaultMQProducer,
        final String msgId) throws RemotingException, MQBrokerException, InterruptedException, MQClientException {
        try {
            MessageExt msg = defaultMQAdminExt.viewMessage(msgId);
            if (msg != null) {
                // resend msg by id
                System.out.printf("prepare resend msg. originalMsgId=" + msgId);
                SendResult result = defaultMQProducer.send(msg);
                System.out.printf("%s", result);
            } else {
                System.out.printf("no message. msgId=" + msgId);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    } 
                            #location 7 
                            #vulnerability type CHECKERS_PRINTF_ARGS
#fixed code
                                private void sendMsg(final DefaultMQAdminExt defaultMQAdminExt, final DefaultMQProducer defaultMQProducer,
        final String msgId) throws RemotingException, MQBrokerException, InterruptedException, MQClientException {
        try {
            MessageExt msg = defaultMQAdminExt.viewMessage(msgId);
            if (msg != null) {
                // resend msg by id
                System.out.printf("prepare resend msg. originalMsgId=%s", msgId);
                SendResult result = defaultMQProducer.send(msg);
                System.out.printf("%s", result);
            } else {
                System.out.printf("no message. msgId=%s", msgId);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }