MP3拷贝程序---字节流

 1 package cn.itcast.p7.io.bytestream.test;
 2 
 3 import java.io.BufferedInputStream;
 4 import java.io.BufferedOutputStream;
 5 import java.io.FileInputStream;
 6 import java.io.FileOutputStream;
 7 import java.io.IOException;
 8 
 9 public class CopyMp3Test {
10 
11     /**
12      * @param args
13      * @throws IOException 
14      */
15     public static void main(String[] args) throws IOException {
16 
17         copy_4();
18     
19     }
20 //    千万不要用，效率没有！
21     public static void copy_4() throws IOException {
22         FileInputStream fis = new FileInputStream("c:\\0.mp3");        
23         FileOutputStream fos = new FileOutputStream("c:\\4.mp3");
24         
25         
26         int ch = 0;
27         
28         while((ch =fis.read())!=-1){
29             fos.write(ch);
30         }
31         
32         fos.close();
33         fis.close();
34     }
35 
36     //不建议。 
37     public static void copy_3() throws IOException {
38         FileInputStream fis = new FileInputStream("c:\\0.mp3");        
39         FileOutputStream fos = new FileOutputStream("c:\\3.mp3");
40         
41         byte[] buf = new byte[fis.available()];
42         fis.read(buf);
43         fos.write(buf);
44         fos.close();
45         fis.close();
46     }
47 
48     public static void copy_2() throws IOException {
49         
50         FileInputStream fis = new FileInputStream("c:\\0.mp3");    
51         BufferedInputStream bufis = new BufferedInputStream(fis);
52         
53         FileOutputStream fos = new FileOutputStream("c:\\2.mp3");
54         BufferedOutputStream bufos = new BufferedOutputStream(fos);
55         
56     
57         
58         int ch = 0;
59         
60         while((ch=bufis.read())!=-1){
61             bufos.write(ch);
62         }
63         
64         bufos.close();
65         bufis.close();
66     }
67 
68     public static void copy_1() throws IOException {
69         
70         FileInputStream fis = new FileInputStream("c:\\0.mp3");        
71         FileOutputStream fos = new FileOutputStream("c:\\1.mp3");
72         
73         byte[] buf = new byte[1024];
74         
75         int len = 0;
76         
77         while((len=fis.read(buf))!=-1){
78             fos.write(buf,0,len);
79         }
80         
81         fos.close();
82         fis.close();
83     }
84     
85     
86 
87 }