package J20250802.demo04; import java.security.PrivilegedActionException; /** * @author WanJl * @version 1.0 * @title UsernameDuplicateException * @description * @create 2025/8/2 */ public class UsernameDuplicateException extends RuntimeException{ /** * Constructs a new exception with {@code null} as its detail message. * The cause is not initialized, and may subsequently be initialized by a * call to {@link #initCause}. */ public UsernameDuplicateException() { } /** * Constructs a new exception with the specified detail message. The * cause is not initialized, and may subsequently be initialized by * a call to {@link #initCause}. * * @param message the detail message. The detail message is saved for * later retrieval by the {@link #getMessage()} method. */ public UsernameDuplicateException(String message) { super(message); } /** * Constructs a new exception with the specified detail message and * cause.

Note that the detail message associated with * {@code cause} is not automatically incorporated in * this exception's detail message. * * @param message the detail message (which is saved for later retrieval * by the {@link #getMessage()} method). * @param cause the cause (which is saved for later retrieval by the * {@link #getCause()} method). (A null value is * permitted, and indicates that the cause is nonexistent or * unknown.) * @since 1.4 */ public UsernameDuplicateException(String message, Throwable cause) { super(message, cause); } /** * Constructs a new exception with the specified cause and a detail * message of (cause==null ? null : cause.toString()) (which * typically contains the class and detail message of cause). * This constructor is useful for exceptions that are little more than * wrappers for other throwables (for example, {@link * PrivilegedActionException}). * * @param cause the cause (which is saved for later retrieval by the * {@link #getCause()} method). (A null value is * permitted, and indicates that the cause is nonexistent or * unknown.) * @since 1.4 */ public UsernameDuplicateException(Throwable cause) { super(cause); } /** * Constructs a new exception with the specified detail message, * cause, suppression enabled or disabled, and writable stack * trace enabled or disabled. * * @param message the detail message. * @param cause the cause. (A {@code null} value is permitted, * and indicates that the cause is nonexistent or unknown.) * @param enableSuppression whether or not suppression is enabled * or disabled * @param writableStackTrace whether or not the stack trace should * be writable * @since 1.7 */ public UsernameDuplicateException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) { super(message, cause, enableSuppression, writableStackTrace); } }