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Java集合通过带有迭代器的ArrayList遍历一个集合
Java集合使用迭代器通过ArrayList遍历集合
实例源码：
源代码：
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import java.util.Collection;3
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import java.util.ArrayList;5
/**6
来 自 时代Java公众号 - nowjava.com7
**/8
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import java.util.Arrays;10
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import java.util.Iterator;12
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import java.text.DateFormatSymbols;14
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public class OysterMonths {17
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Collection<String> safeMonths;19
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public Collection<String> filter(Collection<String> c) {22
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Collection<String> filteredCollection = new ArrayList<String>();25
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for (Iterator<String> i = c.iterator(); i.hasNext();) {28
/**29
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**/31
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String s = i.next();33
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if (condition(s)) {35
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filteredCollection.add(s);37
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}39
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}41
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return filteredCollection;43
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}45
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public boolean condition(String s) {48
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return s.contains("r");50
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}52
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public static void main(String[] args) {55
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OysterMonths om = new OysterMonths();57
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DateFormatSymbols dfs = new DateFormatSymbols();59
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String[] monthArray = dfs.getMonths();61
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Collection<String> months = Arrays.asList(monthArray);63
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om.safeMonths = om.filter(months);65
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System.out.println("The following months are safe for oysters:");67
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System.out.println(om.safeMonths);69
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}71
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}73
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/*76
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* Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.78
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*80
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* Redistribution and use in source and binary forms, with or without82
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* modification, are permitted provided that the following conditions84
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* are met:86
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*88
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* - Redistributions of source code must retain the above copyright90
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* notice, this list of conditions and the following disclaimer.92
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*94
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* - Redistributions in binary form must reproduce the above copyright96
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* notice, this list of conditions and the following disclaimer in the98
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* documentation and/or other materials provided with the distribution.100
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*102
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* - Neither the name of Oracle or the names of its104
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* contributors may be used to endorse or promote products derived106
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* from this software without specific prior written permission.108
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*110
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS112
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,114
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR116
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR118
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,120
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