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 }