练习：字节流缓冲区复制文件

package bytetest;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyMp3 {

public static void main(String[] args) throws IOException {
copyMp3_1();
}

// 通过缓冲区复制文件
public static void copyMp3_1() throws IOException {
BufferedInputStream bufis = new BufferedInputStream(
new FileInputStream("1.mp3"));
BufferedOutputStream bufos = new BufferedOutputStream(
new FileOutputStream("2.mp3"));

int by=0;

//Buffered本身就是缓冲区，所以不需要自己定义缓冲区
while((by=bufis.read())!=-1){
bufos.write(by);
}

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