【Java基础】System的arraycopy方法拷贝数组

一、在System类中查看方法的定义

二、示例

1 public class SystemArrayCopyTest {
2
3     /**
4      * @Description: System的arrayCopy方法测试
5      * @param @param args
6      * @return void
7      * @throws
8      * @author liping.sang
9      * @date 2017-6-21
10      */
11     private  static int COPY_LENTH=3;
12     public static void main(String[] args) {
13         String [] src = {"Do","More","Think","More"};
14         String [] dest= new String[COPY_LENTH];
15         System.arraycopy(src, 0, dest, 0, COPY_LENTH);
16         for(String s:dest){
17             System.out.print(s+" ");
18         }
19         System.out.println();
20         System.out.println("----------------自身拷贝-----------------");
21         System.arraycopy(src, 0, src, 1, COPY_LENTH-1);
22         for(String s:src){
23             System.out.print(s+" ");
24         }
25     }
26
27 }

Do More Think
----------------自身拷贝-----------------
Do Do More More