001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    package org.apache.shiro.authc;
020    
021    /**
022     * Thrown when attempting to authenticate with a principal that doesn't exist in the system (e.g.
023     * by specifying a username that doesn't relate to a user account).
024     *
025     * <p>Whether or not an application wishes to alert a user logging in to the system of this fact is
026     * at the discretion of those responsible for designing the view and what happens when this
027     * exception occurs.
028     *
029     * @since 0.1
030     */
031    public class UnknownAccountException extends AccountException {
032    
033        /**
034         * Creates a new UnknownAccountException.
035         */
036        public UnknownAccountException() {
037            super();
038        }
039    
040        /**
041         * Constructs a new UnknownAccountException.
042         *
043         * @param message the reason for the exception
044         */
045        public UnknownAccountException(String message) {
046            super(message);
047        }
048    
049        /**
050         * Constructs a new UnknownAccountException.
051         *
052         * @param cause the underlying Throwable that caused this exception to be thrown.
053         */
054        public UnknownAccountException(Throwable cause) {
055            super(cause);
056        }
057    
058        /**
059         * Constructs a new UnknownAccountException.
060         *
061         * @param message the reason for the exception
062         * @param cause   the underlying Throwable that caused this exception to be thrown.
063         */
064        public UnknownAccountException(String message, Throwable cause) {
065            super(message, cause);
066        }
067    }