public void close(){
  if (f_reader != null) {
    try {
      f_reader.close();
    }
 catch (    IOException e) {
      e.printStackTrace();
    }
  }
}

public void close ( ) { if ( f_reader != null ) { try { f_reader . close ( ) ; } catch ( IOException e ) { e . printStackTrace ( ) ; } } }
closes the current reader .
