diff --git a/javaSE-day01/src/com/inmind/stringjoiner07/Demo25.java b/javaSE-day01/src/com/inmind/stringjoiner07/Demo25.java
new file mode 100644
index 0000000..32fbdb2
--- /dev/null
+++ b/javaSE-day01/src/com/inmind/stringjoiner07/Demo25.java
@@ -0,0 +1,20 @@
+package com.inmind.stringjoiner07;
+
+import java.util.StringJoiner;
+
+public class Demo25 {
+    public static void main(String[] args) {
+        //想将一段数据使用,相连，拼接成字符串
+        StringJoiner sj = new StringJoiner(",");
+        sj.add("java1");
+        sj.add("java2");
+        sj.add("java3");
+        System.out.println(sj);
+
+        StringJoiner sj1 = new StringJoiner("@", "[", "]");
+        sj1.add("java1");
+        sj1.add("java2");
+        sj1.add("java3");
+        System.out.println(sj1);
+    }
+}