code: // from gee.cs.oswego.edu/home/jsr166/jsr166
  
  package jsr166tests.jtreg.util.AbstractList;
  
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
   *
   * This code 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
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
   * CA 95054 USA or visit www.sun.com if you need additional information or
   * have any questions.
   */
  
  /*
   * @test
   * @bug     4902078
   * @summary concurrent modification not detected on 2nd to last iteration
   * @author  Josh Bloch
   *
   * @ignore Bug fix temporarily removed as it uncovered other bugs (4992226)
   * @compile -source 1.5 CheckForComodification.java
   * @run main CheckForComodification
   */
  
  import java.util.*;
  
  public class CheckForComodification {
      private static final int LENGTH = 10;
      public static void main(String[] args) throws Exception {
          List<Integer> list = new ArrayList<Integer>();
          for (int i = 0; i < LENGTH; i++)
              list.add(i);
          try {
              for (int i : list)
                  if (i == LENGTH - 2)
                      list.remove(i);
          } catch(ConcurrentModificationException e) {
              return;
          }
          throw new RuntimeException("No ConcurrentModificationException");
      }
  }
  