diff --git a/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Kafka.java b/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/Kafka.java
similarity index 98%
rename from cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Kafka.java
rename to cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/Kafka.java
index d1a0ac1..fe39bf9 100644
--- a/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Kafka.java
+++ b/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/Kafka.java
@@ -1,4 +1,4 @@
-package com.muyu.car;
+package com.muyu.car.test;
 
 import com.alibaba.fastjson.JSONObject;
 import org.apache.kafka.clients.producer.KafkaProducer;
diff --git a/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Demo.java b/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/MQTT.java
similarity index 94%
rename from cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Demo.java
rename to cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/MQTT.java
index 92a6092..ae3050e 100644
--- a/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/Demo.java
+++ b/cloud-modules/cloud-modules-car/src/main/java/com/muyu/car/test/MQTT.java
@@ -1,9 +1,8 @@
-package com.muyu.car;
+package com.muyu.car.test;
 
 import org.eclipse.paho.client.mqttv3.*;
-import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
 
-public class Demo {
+public class MQTT {
 
     public static void main(String[] args) {