package exercise.exercise01; /** * @author WanJl * @version 1.0 * @title UsernameLengthException * @description 用户名长度异常(长度必须在 3~12 个字符之间) * @create 2026/7/28 */ public class UsernameLengthException extends Exception{ protected UsernameLengthException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) { super(message, cause, enableSuppression, writableStackTrace); } public UsernameLengthException(Throwable cause) { super(cause); } public UsernameLengthException(String message, Throwable cause) { super(message, cause); } public UsernameLengthException(String message) { super(message); } public UsernameLengthException() { super(); } }