diff --git a/test1.java b/test1.java
index e69de29..a67cf81 100644
--- a/test1.java
+++ b/test1.java
@@ -0,0 +1,14 @@
+# 创建一个文件
+echo "Hello, world!" > hello.txt
+git add .
+git commit -m "Initial commit with v1"
+
+# 修改文件内容以创建v2
+echo "Hello, Git!" > hello.txt
+git add .
+git commit -m "Updated to v2"
+
+# 再次修改文件内容以创建v3
+echo "Hello, version control!" > hello.txt
+git add .
+git commit -m "Updated to v3"
\ No newline at end of file