}

  public static void saveFileFromChars(

    File file, String encoding, char[] buf)

    throws IOException

  {

    if (buf==null) {

      file.delete(); return;

    }

    saveFileFromChars(

      file,encoding,buf,0,buf.length);

  }

  public static void saveFileFromChars(

    File file, String encoding,

    char[] buf, int off, int len)

    throws IOException

  {

    if (buf==null) {

      file.delete(); return;

    }

    OutputStreamWriter f= encoding==null?

      new FileWriter(file):

      new OutputStreamWriter(

        new FileOutputStream(file),encoding);

    try {

      f.write(buf,off,len);

    } catch (IOException e) {

      try {f.close();} catch (Exception e1) {};