diff --git a/src/main/java/com/corundumstudio/socketio/SimpleServer.java b/src/main/java/com/corundumstudio/socketio/demo/SimpleServer.java
similarity index 90%
rename from src/main/java/com/corundumstudio/socketio/SimpleServer.java
rename to src/main/java/com/corundumstudio/socketio/demo/SimpleServer.java
index 76db929..0740ebb 100644
--- a/src/main/java/com/corundumstudio/socketio/SimpleServer.java
+++ b/src/main/java/com/corundumstudio/socketio/demo/SimpleServer.java
@@ -1,4 +1,4 @@
-package com.corundumstudio.socketio;
+package com.corundumstudio.socketio.demo;
 
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.*;
@@ -20,6 +20,10 @@ public class SimpleServer {
         EventLoopGroup workerGroup = new NioEventLoopGroup();
 
         try {
+            /*
+             *服务端的启动辅助类
+             * 通过给它设置一系列参数来绑定端口启动服务
+             */
             ServerBootstrap b = new ServerBootstrap();
             b.group(bossGroup, workerGroup)
                     .channel(NioServerSocketChannel.class)