Subscribe() throws IOException, FileNotFoundException
   {
      list = new char[size][size];
      int count = 0;
      BufferedReader reader = new BufferedReader(new FileReader("subscribe.txt"));
      String line = reader.readLine();
      
      while(line != null)
      {
         for(int i = 0; i < size; i++)
         {
            list[count][i] = line.charAt(i);
         }
         line = reader.readLine();
         count++;
      }
   }