diff --git a/src b/src
new file mode 100644
index 0000000..eead080
--- /dev/null
+++ b/src
@@ -0,0 +1,47 @@
+import java.util.Scanner;
+
+// 主类
+public class Main {
+    public static void main(String[] args) {
+        BookManagementSystem bms = new BookManagementSystem();
+        Scanner scanner = new Scanner(System.in);
+
+        while (true) {
+            System.out.println("\n图书管理系统");
+            System.out.println("1. 添加图书");
+            System.out.println("2. 显示图书列表");
+            System.out.println("3. 查找图书");
+            System.out.println("4. 退出");
+            System.out.print("请输入选项：");
+
+            int choice = scanner.nextInt();
+            scanner.nextLine(); // 消耗换行符
+
+            switch (choice) {
+                case 1:
+                    System.out.print("请输入图书ID：");
+                    String id = scanner.nextLine();
+                    System.out.print("请输入图书名称：");
+                    String name = scanner.nextLine();
+                    System.out.print("请输入图书作者：");
+                    String author = scanner.nextLine();
+                    bms.addBook(id, name, author);
+                    break;
+                case 2:
+                    bms.displayBooks();
+                    break;
+                case 3:
+                    System.out.print("请输入查找关键词：");
+                    String keyword = scanner.nextLine();
+                    bms.searchBook(keyword);
+                    break;
+                case 4:
+                    System.out.println("感谢使用图书管理系统，再见！");
+                    scanner.close();
+                    return;
+                default:
+                    System.out.println("无效选项，请重新输入！");
+            }
+        }
+    }
+}
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