001/* ConcurrentModificationException.java -- Data structure concurrently modified
002   Copyright (C) 1998, 1999, 2001, 2005  Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package 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 */
069public 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}