1 /*
   2  * Copyright (c) 1994, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.util;
  27 
  28 /**
  29  * Thrown by various accessor methods to indicate that the element being requested
  30  * does not exist.
  31  *
  32  * @author  unascribed
  33  * @see     java.util.Enumeration#nextElement()
  34  * @see     java.util.Iterator#next()
  35  * @since   1.0
  36  */
  37 public class NoSuchElementException extends RuntimeException {
  38     @java.io.Serial
  39     private static final long serialVersionUID = 6769829250639411880L;
  40 
  41     /**
  42      * Constructs a {@code NoSuchElementException} with {@code null}
  43      * as its error message string.
  44      */
  45     public NoSuchElementException() {
  46         super();
  47     }
  48 
  49     /**
  50      * Constructs a {@code NoSuchElementException}, saving a reference
  51      * to the error message string {@code s} for later retrieval by the
  52      * {@code getMessage} method.
  53      *
  54      * @param   s   the detail message.
  55      */
  56     public NoSuchElementException(String s) {
  57         super(s);
  58     }
  59 
  60     /**
  61      * Constructs a {@code NoSuchElementException} with the specified detail
  62      * message and cause.
  63      *
  64      * @param s     the detail message, or null
  65      * @param cause the cause (which is saved for later retrieval by the
  66      *              {@link #getCause()} method), or null
  67      * @since 15
  68      */
  69     public NoSuchElementException(String s, Throwable cause) {
  70         super(s, cause);
  71     }
  72 
  73     /**
  74      * Constructs a {@code NoSuchElementException} with the specified cause.
  75      * The detail message is set to {@code (cause == null ? null :
  76      * cause.toString())} (which typically contains the class and
  77      * detail message of {@code cause}).
  78      *
  79      * @param cause the cause (which is saved for later retrieval by the
  80      *              {@link #getCause()} method)
  81      * @since 15
  82      */
  83     public NoSuchElementException(Throwable cause) {
  84         super(cause);
  85     }
  86 }