Java 创建一个包含给定字符串大小的Collection。
创建一个包含给定字符串大小的Collection。
实例源码：
源代码：
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/*3
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* Copyright JTheque (Baptiste Wicht)5
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*7
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* Licensed under the Apache License, Version 2.0 (the "License");9
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* you may not use this file except in compliance with the License.11
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* You may obtain a copy of the License at13
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*15
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* http://www.apache.org/licenses/LICENSE-2.017
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*19
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* Unless required by applicable law or agreed to in writing, software21
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* distributed under the License is distributed on an "AS IS" BASIS,23
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.25
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* See the License for the specific language governing permissions and27
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* limitations under the License.29
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*/31
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//package com.nowjava;33
/** 34
来自 时 代 J a v a 公 众 号 - N o w J a v a . c o m**/35
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import java.util.ArrayList;37
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import java.util.Collection;39
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import java.util.Collections;41
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import java.util.List;43
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import java.util.Random;45
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public class Main {48
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public static void main(String[] argv) throws Exception {50
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int size = 2;52
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String strings = "nowjava.com";54
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System.out.println(newRandomStringList(size, strings));56
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}58
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/**60
来 自 NowJava.com - 时代Java61
**/62
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private static final Random RANDOM = new Random();64
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/**67
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* Create a Collection containing the given size of the given strings. The order of strings in the collection is69
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* random.71
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*73
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* @param size The size of the collection to create.75
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* @param strings The strings to use to fill the collection.77
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*79
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* @return A Collection containing the given number of strings taken from the strings.81
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*83
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* @throws IllegalArgumentException If size is less than 0 or if strings doesn't contains at least one String.85
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*/87
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public static Collection<String> newRandomStringList(int size,89
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String strings) {91
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if (size < 0) {93
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throw new IllegalArgumentException(95
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"Size cannot be less than 0. ");97
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}99
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if (strings == null || strings.length == 0) {102
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throw new IllegalArgumentException(104
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"strings must contains at least one String. ");106
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}108
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List<String> list = new ArrayList<String>(size);111
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/**代码未完, 请加载全部代码(NowJava.com).**/执行结果：
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