集册 Java实例教程 将类型化集合转换为类型化数组。

将类型化集合转换为类型化数组。

欢马劈雪     最近更新时间:2020-01-02 10:19:05

409
提示:您可在线编辑运行本教程的实例 - 运行实例,去试试!
将类型化集合转换为类型化数组。

/**

 * Copyright 2009-2013 Oy Vaadin Ltd

 *

 * 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.book2s;

import java.lang.reflect.Array;

import java.util.Collection;
/** 
 来自 时代Java - N o w  J a v a . c o m**/


public class Main {

    public static void main(String[] argv) {

        Class type = String.class;

        Collection collection = java.util.Arrays.asList("asdf",

                "book2s.com");

        System.out.println(java.util.Arrays.toString(toArray(type,

                collection)));

    }


    /**

     * Converts a typed {@link Collection} to a typed array.

     * 

     * @param type

     *            the type class

     * @param collection

     *            the collection to convert to an array.

     * @return the array.

     */

    @SuppressWarnings("unchecked")
    /*
    来 自*
     时代Java - N o w  J a 
展开阅读全文