diff --git a/core-java-modules/core-java-11-2/README.md b/core-java-modules/core-java-11-2/README.md
index 26715fafd9..fc633703ba 100644
--- a/core-java-modules/core-java-11-2/README.md
+++ b/core-java-modules/core-java-11-2/README.md
@@ -3,7 +3,6 @@
 本模块中包含有关 Java 11 核心新增功能的的一些文章
 
 ### 相关文章
-- [Java 8 开始新增的 Optional 类](https://www.ossez.com/t/java-8-optional/13964)
 - [Guide to Java Reflection](http://www.baeldung.com/java-reflection)
 - [Guide to Java 8’s Collectors](https://www.baeldung.com/java-8-collectors)
 - [New Features in Java 11](https://www.baeldung.com/java-11-new-features)
diff --git a/core-java-modules/core-java-8-2/README.md b/core-java-modules/core-java-8-2/README.md
index 9b6a0f1716..fe8dba5a8e 100644
--- a/core-java-modules/core-java-8-2/README.md
+++ b/core-java-modules/core-java-8-2/README.md
@@ -2,12 +2,12 @@
 
 本模块中包含有关 Java 8 核心新增功能特性的一些文章。
 
-### 相关文章 
-
+### 相关文章
 - [Run a Java Application from the Command Line](https://www.baeldung.com/java-run-jar-with-arguments)
 - [Java 8 Stream skip() vs limit()](https://www.baeldung.com/java-stream-skip-vs-limit)
 - [Guide to Java BiFunction Interface](https://www.baeldung.com/java-bifunction-interface)
 - [Interface With Default Methods vs Abstract Class](https://www.baeldung.com/java-interface-default-method-vs-abstract-class)
 - [Convert Between Byte Array and UUID in Java](https://www.baeldung.com/java-byte-array-to-uuid)
 - [Create a Simple “Rock-Paper-Scissors” Game in Java](https://www.baeldung.com/java-rock-paper-scissors)
+- [Java 8 开始新增的 Optional 类](https://www.ossez.com/t/java-8-optional/13964)
 - [[<-- Java 8 核心（第 1 部分）]](/core-java-modules/core-java-8)