Initial commit

Experiment/graph/Exp7/FileContentCopy.mermaid

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+flowchart TD
+    A[开始] --> B[创建 FileReader 读取 source.txt]
+    B --> C[创建 FileWriter 写入 object.txt]
+    C --> D{"reader.read() 返回值"}
+    D -- != -1 --> E[将字符写入 object.txt]
+    E --> D
+    D -- == -1 --> F[关闭 reader 和 writer]
+    F --> G[程序结束]