system.arraycopy方法使用

数组复制

Object[] listSource=Arrays.asList("a","b","c","d").toArray();
        Object[] listDest=Arrays.asList("e","f","g","h","k").toArray();


        System.arraycopy(listSource,2,listDest,3,2);

        System.out.println(Arrays.asList(listSource));
        System.out.println(Arrays.asList(listDest));

输出:

[a, b, c, d]
[e, f, g, c, d]

参数分析:

    * @param      src      the source array.
     * @param      srcPos   starting position in the source array.
     * @param      dest     the destination array.
     * @param      destPos  starting position in the destination data.
     * @param      length   the number of array elements to be copied.

 

来源：CSDN

作者：weixin_39102174

链接：https://blog.csdn.net/weixin_39102174/article/details/103974755