diff --git a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoExceptionHandler.java b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoExceptionHandler.java
index 075c7d9337fc085c9b5164ce437f5ad0fcafaa81..c0d2e880f829d9cf076c099626889b85dbec5c08 100644
--- a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoExceptionHandler.java
+++ b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoExceptionHandler.java
@@ -3,6 +3,13 @@ package com.kwan.shuyu.demo;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 
+/**
+ * 异常处理器
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/8/24 14:29
+ */
 public class EchoExceptionHandler extends ChannelInboundHandlerAdapter {
     @Override
     public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
diff --git a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoOutSelfHandler.java b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoOutSelfHandler.java
index 4b93da30899e6acb1d03b4bcd00a120194aa36c8..5e59d7ee0b35c9058174f154d260335c96f10590 100644
--- a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoOutSelfHandler.java
+++ b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoOutSelfHandler.java
@@ -7,6 +7,14 @@ import io.netty.channel.ChannelOutboundHandlerAdapter;
 import io.netty.channel.ChannelPromise;
 import io.netty.util.CharsetUtil;
 
+
+/**
+ * 出栈处理器
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/8/24 14:28
+ */
 public class EchoOutSelfHandler extends ChannelOutboundHandlerAdapter {
     @Override
     public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
@@ -22,7 +30,6 @@ public class EchoOutSelfHandler extends ChannelOutboundHandlerAdapter {
             }
         });
     }
-
     @Override
     public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
         System.out.println("im in");
diff --git a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoServerHandler.java b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoServerHandler.java
index 3d389ad6ed70fbe984e10f144c5d5adb1ab86a20..f50b7a2df75282702ba5fed810a70f8370bf5854 100644
--- a/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoServerHandler.java
+++ b/netty-02-induction/src/main/java/com/kwan/shuyu/demo/EchoServerHandler.java
@@ -7,6 +7,13 @@ import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.util.CharsetUtil;
 
 
+/**
+ * 入栈处理器
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/8/24 14:29
+ */
 @ChannelHandler.Sharable
 public class EchoServerHandler extends ChannelInboundHandlerAdapter {
     @Override