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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [java/] [util/] [Enumeration.java] - Rev 771

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/* Enumeration.java -- Interface for enumerating lists of objects
   Copyright (C) 1998, 1999, 2001, 2004, 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.
 * Status:  Believed complete and correct
 */
 
/**
 * Interface for lists of objects that can be returned in sequence. Successive
 * objects are obtained by the nextElement method.
 * <p>
 * As of Java 1.2, the Iterator interface provides the same functionality, but
 * with shorter method names and a new optional method to remove items from the
 * list. If writing for 1.2, consider using Iterator instead. Enumerations over
 * the new collections classes, for use with legacy APIs that require them, can
 * be obtained by the enumeration method in class Collections.
 *
 * @author Warren Levy (warrenl@cygnus.com)
 * @author Eric Blake (ebb9@email.byu.edu)
 * @see Iterator
 * @see Hashtable
 * @see Vector
 * @since 1.0
 * @status updated to 1.4
 */
public interface Enumeration<E>
{
  /**
   * Tests whether there are elements remaining in the enumeration.
   *
   * @return true if there is at least one more element in the enumeration,
   *         that is, if the next call to nextElement will not throw a
   *         NoSuchElementException.
   */
  boolean hasMoreElements();
 
  /**
   * Obtain the next element in the enumeration.
   *
   * @return the next element in the enumeration
   * @throws NoSuchElementException if there are no more elements
   */
  E nextElement();
}
 

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