/* 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
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any later version.

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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.

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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
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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
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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
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this exception to your version of the library, but you are not
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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();
}