/**

• @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");

}