diff --git a/DuplicateStudentException.java b/DuplicateStudentException.java
deleted file mode 100644
index 7961a23..0000000
--- a/DuplicateStudentException.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package com.studentmanagement.exception;
-
-/**
- * 重复学生异常，当尝试添加ID已存在的学生时抛出
- */
-public class DuplicateStudentException extends Exception {
-    
-    /**
-     * 构造函数
-     * @param message 异常信息
-     */
-    public DuplicateStudentException(String message) {
-        super(message);
-    }
-    
-    /**
-     * 构造函数，带学生ID
-     * @param id 学生ID
-     */
-    public DuplicateStudentException(int id) {
-        super("学生ID " + id + " 已存在");
-    }
-}
\ No newline at end of file