带缓存的输入流输出流

 1 import java.io.BufferedInputStream;
 2 import java.io.BufferedOutputStream;
 3 import java.io.FileInputStream;
 4 import java.io.FileNotFoundException;
 5 import java.io.FileOutputStream;
 6 import java.io.IOException;
 7
 8 public class TestBufferedStream {
 9     public static void main(String[] args) {
10         BufferedInputStream bis = null;
11         BufferedOutputStream bos = null;
12
13         try {
14             bis = new BufferedInputStream(new FileInputStream("D:\\MY文档\\pic\\云纱.jpg"));
15             bos = new BufferedOutputStream(new FileOutputStream("C:/Users/Polly/java/天河菱纱.jpg"));
16             byte[] buf = new byte[1024];
17             int len = 0;
18             while((len=bis.read(buf))>=0){
19                 bos.write(buf,0,len);
20             }
21             //需要对缓存流进行刷新，或者用finally结束缓存流；
22             //bos.flush();
23
24         } catch (FileNotFoundException e) {
25             e.printStackTrace();
26         } catch (IOException e) {
27             e.printStackTrace();
28         } finally{
29             try {
30                 if (bis!=null) bis.close();
31             } catch (IOException e) {
32                 e.printStackTrace();
33             }
34             try {
35                 if (bos!=null) bos.close();
36             } catch (IOException e) {
37                 e.printStackTrace();
38             }
39         }
40
41     }
42
43 }