【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

 public class SystemArrayCopyTest {

     /**
      * @Description: System的arrayCopy方法测试
      * @param @param args
      * @return void
      * @throws
      * @author liping.sang
      * @date 2017-6-21
      */
     private  static int COPY_LENTH=3;
     public static void main(String[] args) {
         String [] src = {"Do","More","Think","More"};
         String [] dest= new String[COPY_LENTH];
         System.arraycopy(src, 0, dest, 0, COPY_LENTH);
         for(String s:dest){
             System.out.print(s+" ");
         }
         System.out.println();
         System.out.println("----------------自身拷贝-----------------");
         System.arraycopy(src, 0, src, 1, COPY_LENTH-1);
         for(String s:src){
             System.out.print(s+" ");
         }
     }

 }

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