diff --git a/docs/basics/java-basic/replace-in-string.md b/docs/basics/java-basic/replace-in-string.md
index 3b66cfaf..fa452eff 100644
--- a/docs/basics/java-basic/replace-in-string.md
+++ b/docs/basics/java-basic/replace-in-string.md
@@ -24,5 +24,5 @@ replaceAll和replaceFirst的区别主要是替换的内容不同，replaceAll是
 
     //使用replaceFirst将第一个数字替换成H
     System.out.println(string.replaceFirst("\\d","H"));//abcH23adb23456aa
-    //使用replaceFirst将所有数字替换成H
-    System.out.println(string.replaceAll("\\d","H"));//abcHHHadbHHHHHaa
\ No newline at end of file
+    //使用replaceAll将所有数字替换成H
+    System.out.println(string.replaceAll("\\d","H"));//abcHHHadbHHHHHaa