将对象数组列表转换为对象数组。

//package com.nowjava;/**来 自 时代Java公众号 - N o w J a  v a . c o m**/

import java.lang.reflect.Array;

import java.util.List;


public class Main {

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

        List list = java.util.Arrays.asList("asdf", "nowjava.com");

        Class arrayElements = String.class;

        System.out.println(java.util.Arrays

                .toString(listOfArraysToDoubleArray(list, arrayElements)));

    }


    /**

     * Convert list of arrays of objects to array of arrays of objects.

     * 

     * @param <T>

     *                type of the array

     * 

     * @param list

     *                {@link List}, list of arrays

     * @param arrayElements

     *                Class, class of the array type

     * @return Object

     */

    @SuppressWarnings("unchecked")

    public static <T> T[][] listOfArraysToDoubleArray(List<T[]> list,

            Class<T> arrayElements) {

        T[][] result = (T[][]) Array.newInstance(arrayElements, new