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Java 创建一个包含给定字符串大小的Collection。

欢马劈雪

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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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* Copyright JTheque (Baptiste Wicht)

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

//package com.nowjava;
/** 
 来自 时 代 J a v a 公 众 号 - N o w J a v  a . c o m**/

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.List;

import java.util.Random;

public class Main {

public static void main(String[] argv) throws Exception {

int size = 2;

String strings = "nowjava.com";

System.out.println(newRandomStringList(size, strings));

}

/**
    来 自 NowJava.com - 时代Java
    **/

private static final Random RANDOM = new Random();

/**

* Create a Collection containing the given size of the given strings. The order of strings in the collection is

* random.

* @param size    The size of the collection to create.

* @param strings The strings to use to fill the collection.

* @return A Collection containing the given number of strings taken from the strings.

* @throws IllegalArgumentException If size is less than 0 or if strings doesn't contains at least one String.

public static Collection<String> newRandomStringList(int size,

String... strings) {

if (size < 0) {

throw new IllegalArgumentException(

"Size cannot be less than 0. ");

}

if (strings == null || strings.length == 0) {

throw new IllegalArgumentException(

"strings must contains at least one String. ");

}

List<String> list = new ArrayList<String>(size);

/**代码未完, 请加载全部代码(NowJava.com).**/

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本文系作者在时代Java发表，未经许可，不得转载。如有侵权，请联系nowjava@qq.com删除。

编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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