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    1   /*
    2    * Copyright 1999-2001,2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package org.apache.commons.jexl.util;
    18
    19
    20  import java.util.Iterator;
    21  import java.util.Enumeration;
    22
    23  /***
    24   * An Iterator wrapper for an Enumeration.
    25   *
    26   * @since 1.0
    27   * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
    28   * @version $Id: EnumerationIterator.java 398330 2006-04-30 12:52:35Z dion $
    29   */
    30  public class EnumerationIterator implements Iterator {
    31      /***
    32       * The enumeration to iterate over.
    33       */
    34      private final Enumeration enumeration;
    35
    36      /***
    37       * Creates a new iteratorwrapper instance for the specified
    38       * Enumeration.
    39       *
    40       * @param enumer  The Enumeration to wrap.
    41       */
    42      public EnumerationIterator(Enumeration enumer) {
    43          enumeration = enumer;
    44      }
    45
    46      /***
    47       * Move to next element in the array.
    48       *
    49       * @return The next object in the array.
    50       */
    51      public Object next() {
    52          return enumeration.nextElement();
    53      }
    54
    55      /***
    56       * Check to see if there is another element in the array.
    57       *
    58       * @return Whether there is another element.
    59       */
    60      public boolean hasNext() {
    61          return enumeration.hasMoreElements();
    62      }
    63
    64      /***
    65       *  Unimplemented.  No analogy in Enumeration
    66       */
    67      public void remove() {
    68          // not implemented
    69      }
    70
    71  }