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enumeration.java
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1995-08-11
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/*
* @(#)Enumeration.java 1.6 95/01/31
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package java.util;
/**
* The Enumeration interface specifies a set of methods that may be used
* to enumerate, or count through, a set of values. The enumeration is
* consumed by use; its values may only be counted once.<p>
*
* For example, to print all elements of a Vector v:
* <pre>
* for (Enumeration e = v.elements() ; e.hasMoreElements() ;) {
* System.out.println(e.nextElement());
* }
* </pre>
* @see Vector
* @see Hashtable
* @version 1.6, 31 Jan 1995
* @author Lee Boynton
*/
public interface Enumeration {
/**
* Returns true if the there are more elements in the
* enumeration.
*/
public abstract boolean hasMoreElements();
/**
* Returns the next element of the enumeration. Calls to
* nextElement() will enumerate successive element.
* @exception NoSuchElementException No more elements
*/
public abstract Object nextElement();
}