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+/* ConcurrentModificationException.java -- Data structure concurrently modified
+   Copyright (C) 1998, 1999, 2001, 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.util;
+
+/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
+ * "The Java Language Specification", ISBN 0-201-63451-1
+ * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
+ */
+
+/**
+ * Exception that is thrown by the collections classes when it is detected that
+ * a modification has been made to a data structure when this is not allowed,
+ * such as when a collection is structurally modified while an Iterator is
+ * operating over it. In cases where this can be detected, a
+ * ConcurrentModificationException will be thrown. An Iterator that detects
+ * this condition is referred to as fail-fast. Notice that this can occur
+ * even in single-threaded designs, if you call methods out of order.
+ *
+ * @author Warren Levy (warrenl@cygnus.com)
+ * @author Eric Blake (ebb9@email.byu.edu)
+ * @see Collection
+ * @see Iterator
+ * @see ListIterator
+ * @see Vector
+ * @see LinkedList
+ * @see HashSet
+ * @see Hashtable
+ * @see TreeMap
+ * @see AbstractList
+ * @since 1.2
+ * @status updated to 1.4
+ */
+public class ConcurrentModificationException extends RuntimeException
+{
+  /**
+   * Compatible with JDK 1.2.
+   */
+  private static final long serialVersionUID = -3666751008965953603L;
+
+  /**
+   * Constructs a ConcurrentModificationException with no detail message.
+   */
+  public ConcurrentModificationException()
+  {
+  }
+
+  /**
+   * Constructs a ConcurrentModificationException with a detail message.
+   *
+   * @param detail the detail message for the exception
+   */
+  public ConcurrentModificationException(String detail)
+  {
+    super(detail);
+  }
+}