【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