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 args13      * @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 }