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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");
