如何实现数组之间的拷贝

public static native void arraycopy(Object src,  int  srcPos,Object dest, int destPos,
int length);
实验代码：

public class ArrayTest08{

public static void main(String[] args){

int[] src = {2,3,4,5,6,7,8};

int[] dest = {10,11,12,13,14,15,16};

//把src中的4,5,6拷贝到dest数组从13开始.
System.arraycopy(src, 2, dest, 3, 3);

//遍历
for(int i=0;i<dest.length;i++){
System.out.println(dest[i]);
}//10.11.12.4.5.6 16

}