001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.collections.primitives.adapters; 018 019import java.util.Iterator; 020 021import org.apache.commons.collections.primitives.CharIterator; 022 023/** 024 * Adapts a {@link java.lang.Number Number}-valued 025 * {@link Iterator Iterator} 026 * to the {@link CharIterator CharIterator} 027 * interface. 028 * <p /> 029 * This implementation delegates most methods 030 * to the provided {@link Iterator Iterator} 031 * implementation in the "obvious" way. 032 * 033 * @since Commons Primitives 1.0 034 * @version $Revision: 480462 $ $Date: 2006-11-29 03:15:00 -0500 (Wed, 29 Nov 2006) $ 035 * @author Rodney Waldhoff 036 */ 037public class IteratorCharIterator implements CharIterator { 038 039 /** 040 * Create an {@link CharIterator CharIterator} wrapping 041 * the specified {@link Iterator Iterator}. When 042 * the given <i>iterator</i> is <code>null</code>, 043 * returns <code>null</code>. 044 * 045 * @param iterator the (possibly <code>null</code>) 046 * {@link Iterator Iterator} to wrap 047 * @return an {@link CharIterator CharIterator} wrapping the given 048 * <i>iterator</i>, or <code>null</code> when <i>iterator</i> is 049 * <code>null</code>. 050 */ 051 public static CharIterator wrap(Iterator iterator) { 052 return null == iterator ? null : new IteratorCharIterator(iterator); 053 } 054 055 /** 056 * Creates an {@link CharIterator CharIterator} wrapping 057 * the specified {@link Iterator Iterator}. 058 * @see #wrap 059 */ 060 public IteratorCharIterator(Iterator iterator) { 061 _iterator = iterator; 062 } 063 064 public boolean hasNext() { 065 return _iterator.hasNext(); 066 } 067 068 public char next() { 069 return ((Character)(_iterator.next())).charValue(); 070 } 071 072 public void remove() { 073 _iterator.remove(); 074 } 075 076 private Iterator _iterator = null; 077 078}