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    }