001 /* ConcurrentModificationException.java -- Data structure concurrently modified
002 Copyright (C) 1998, 1999, 2001, 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package java.util;
040
041 /* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
042 * "The Java Language Specification", ISBN 0-201-63451-1
043 * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
044 */
045
046 /**
047 * Exception that is thrown by the collections classes when it is detected that
048 * a modification has been made to a data structure when this is not allowed,
049 * such as when a collection is structurally modified while an Iterator is
050 * operating over it. In cases where this can be detected, a
051 * ConcurrentModificationException will be thrown. An Iterator that detects
052 * this condition is referred to as fail-fast. Notice that this can occur
053 * even in single-threaded designs, if you call methods out of order.
054 *
055 * @author Warren Levy (warrenl@cygnus.com)
056 * @author Eric Blake (ebb9@email.byu.edu)
057 * @see Collection
058 * @see Iterator
059 * @see ListIterator
060 * @see Vector
061 * @see LinkedList
062 * @see HashSet
063 * @see Hashtable
064 * @see TreeMap
065 * @see AbstractList
066 * @since 1.2
067 * @status updated to 1.4
068 */
069 public class ConcurrentModificationException extends RuntimeException
070 {
071 /**
072 * Compatible with JDK 1.2.
073 */
074 private static final long serialVersionUID = -3666751008965953603L;
075
076 /**
077 * Constructs a ConcurrentModificationException with no detail message.
078 */
079 public ConcurrentModificationException()
080 {
081 }
082
083 /**
084 * Constructs a ConcurrentModificationException with a detail message.
085 *
086 * @param detail the detail message for the exception
087 */
088 public ConcurrentModificationException(String detail)
089 {
090 super(detail);
091 }
092 }