82 lines
3.1 KiB
Java
82 lines
3.1 KiB
Java
/* Enumeration.java -- Interface for enumerating lists of objects
|
|
Copyright (C) 1998, 1999, 2001 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., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 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
|
|
{
|
|
/**
|
|
* 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
|
|
*/
|
|
Object nextElement();
|
|
}
|