IO流——利用字节流缓冲区复制MP3文件

/*
演示mp3的复制。通过缓冲区。
BufferedOutputStream
BufferedInputStream


*/
import java.io.*;
class  CopyMp3
{
public static void main(String[] args) throws IOException
{
long start = System.currentTimeMillis();
copy_2();
long end = System.currentTimeMillis();

System.out.println((end-start)+"毫秒");
}

public static void copy_2()throws IOException
{
MyBufferedInputStream bufis = new MyBufferedInputStream(new FileInputStream("c:\\9.mp3"));
BufferedOutputStream bufos = new BufferedOutputStream(new FileOutputStream("c:\\3.mp3"));

int by = 0;

//System.out.println("第一个字节:"+bufis.myRead());

while((by=bufis.myRead())!=-1)
{
bufos.write(by);
}

bufos.close();
bufis.myClose();
}

//通过字节流的缓冲区完成复制。
public static void copy_1()throws IOException
{
BufferedInputStream bufis = new BufferedInputStream(new FileInputStream("c:\\0.mp3"));
BufferedOutputStream bufos = new BufferedOutputStream(new FileOutputStream("c:\\1.mp3"));

int by = 0;

while((by=bufis.read())!=-1)
{
bufos.write(by);
}

bufos.close();
bufis.close();


}
}