Update README.md

Author: Snailclimb

README.md

@@ -78,16 +78,17 @@
 * [BATJ都爱问的多线程面试题](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/Multithread/BATJ都爱问的多线程面试题.md)
 * [并发容器总结](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/Multithread/并发容器总结.md)
 
-### Java IO 与 NIO
-
-* [Java IO 与 NIO系列文章](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/Java%20IO与NIO.md)
-
 ### Java 虚拟机 jvm
 
 * [可能是把Java内存区域讲的最清楚的一篇文章](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/可能是把Java内存区域讲的最清楚的一篇文章.md)
 * [搞定JVM垃圾回收就是这么简单](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/搞定JVM垃圾回收就是这么简单.md)
 * [《深入理解Java虚拟机》第2版学习笔记](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/Java虚拟机（jvm）.md)
 
+
+### Java IO 与 NIO
+
+* [Java IO 与 NIO系列文章](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/Java%20IO与NIO.md)
+
 ### 设计模式
 
 * [设计模式系列文章](https://github.com/Snailclimb/Java_Guide/blob/master/Java相关/设计模式.md)
@@ -117,6 +118,7 @@
 * [数据通信(RESTful、RPC、消息队列)相关知识点总结](https://github.com/Snailclimb/Java-Guide/blob/master/计算机网络与数据通信/数据通信(RESTful、RPC、消息队列).md)
 * [Dubbo 总结：关于 Dubbo 的重要知识点](https://github.com/Snailclimb/Java-Guide/blob/master/计算机网络与数据通信/dubbo.md)
 * [消息队列总结：新手也能看懂，消息队列其实很简单](https://github.com/Snailclimb/Java-Guide/blob/master/计算机网络与数据通信/message-queue.md)
+
 ## :iphone: 操作系统
 
 ### Linux相关