diff --git a/docs/java/jvm/Java内存区域.md b/docs/java/jvm/Java内存区域.md
index 11210af1..918585a0 100644
--- a/docs/java/jvm/Java内存区域.md
+++ b/docs/java/jvm/Java内存区域.md
@@ -371,7 +371,7 @@ System.out.println(str3 == str5);//true
 System.out.println(str4 == str5);//false
 ```
 
-![字符串拼接](./pictures/java内存区域/字符串拼接-常量池2.png)
+![字符串拼接](./pictures/java内存区域/字符串拼接-常量池.png)
 
 尽量避免多个字符串拼接，因为这样会重新创建对象。如果需要改变字符串的话，可以使用 StringBuilder 或者 StringBuffer。
 
diff --git a/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.drawio b/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.drawio
new file mode 100644
index 00000000..764cc0be
--- /dev/null
+++ b/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.drawio
@@ -0,0 +1 @@
+<mxfile host="Electron" modified="2021-08-17T04:11:31.953Z" agent="5.0 (Macintosh; Intel Mac OS X 10_16_0) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/13.4.5 Chrome/83.0.4103.122 Electron/9.1.0 Safari/537.36" etag="e0WDqV46oSxYOHa3xZl5" version="13.4.5" type="device"><diagram id="_ekre9nY7dw9-rCbcCB4" name="Page-1">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</diagram></mxfile>
\ No newline at end of file
diff --git a/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.png b/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.png
new file mode 100644
index 00000000..4c6f20e9
Binary files /dev/null and b/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池.png differ
diff --git a/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池2.png b/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池2.png
deleted file mode 100644
index b680fb60..00000000
Binary files a/docs/java/jvm/pictures/java内存区域/字符串拼接-常量池2.png and /dev/null differ