Initial commit with v1

hello.txt

@@ -0,0 +1 @@
+echo "Hello, world!"

test1.java

@@ -1,14 +0,0 @@
-# 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"