第四篇笔记

/**

@param args

*/

public static void copy(File a,File b){

try {

FileInputStream fis = new FileInputStream("a.mp3");

FileOutputStream fos = new FileOutputStream("temp.mp3");

byte[] buf = new byte[1024];

int len;

int read = fis.read();

while((len = fis.read(buf))!=-1){

fos.write(buf, 0, len);

}

fis.close();

fos.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}


}

public static void main(String[] args) {

// TODO Auto-generated method stub

File a = new File("");

File b = new File("");

long start,end;

start = System.currentTimeMillis();

copy(a,b);

end = System.currentTimeMillis();

System.out.println("复制所用时间：" + (end - start) + "ms");

}