Rebjat privet, vsjo rabotaet no pochemuto ne prohodit, zaranee spasibo
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
       String string = reader.readLine();

       String[] array;
       array = string.split("\\s+");

       StringBuilder stringBuilder = new StringBuilder(string.length());

       for (int i = 0; i <array.length ; i++) {

            stringBuilder.append(array[i].substring(0, 1).toUpperCase()).append(array[i].substring(1)).append(" ");

       }

          String s = String.valueOf(stringBuilder);

       s = s.trim();





       System.out.println(s + ".");
   }