写一个程序，意味着一定int数unicode等同的编码在utf-8格式。

编码文件，以utf-8java

  String charset = "ISO-8859-1"; // or what corresponds
  BufferedReader in = new BufferedReader( 
      new InputStreamReader (new FileInputStream(file), charset));
  String line;
  while( (line = in.readLine()) != null) { 
    ....
  }