使用FileInputStream类实现将D盘a.jpg复制到E盘目录下

Posted 2020-11-25 wangjixue

 1 import java.io.*;
 2 
 3 /*
 4           使用FileInputStream类实现将D盘a.jpg复制到E盘目录下
 5  */
 6 public class Demo {
 7     public static void main(String[] args) throws IOException {
 8         InputStream in = new FileInputStream("D://a.jpg");
 9         OutputStream out = new FileOutputStream("E://a.jpg");
10         int len = 0 ;
11         byte[] b = new byte[1024 * 10];
12         while ((len = in.read(b)) != -1){
13             out.write(len);
14         }
15         out.close();
16         in.close();
17     }
18 }