public void input(String a) throws IOException{
    
      File file = new File(ConstansBook.OLD_DAT_URL);

      //ŏ߂邱ƂؖAIOException\ď̂͏璷H
      if (checkBeforeWritefile(file)){
        FileWriter filewriter = new FileWriter(file, true);
       
        String commandLine = ConstansBook.SPACE + a;
        
        System.out.println("ŗ^ꂽ{ł");
        System.out.println(commandLine);
        
        filewriter.write(commandLine);


        filewriter.close();
      }else{
        System.out.println("t@Cɏ߂܂");
      }
   
  }