System.arraycopy（）的方便包装。

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//package com.nowjava;
/*from 时 代 J a v a 公 众 号 - nowjava.com*/

public class Main {

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

        Object source = "nowjava.com";

        Object dest = "nowjava.com";

        int count = 2;

        copy