FileReader.java

import java.io.*;
 class CountSpace {
  public static void main(String[] args)
     throws IOException
  {
    Reader in;
    if (args.length == 0)
      in = new InputStreamReader(System.in);
    else
      in = new FileReader(args[0]);
    int ch;
    int total;
    int spaces = 0;
    for (total = 0; (ch = in.read()) != -1; total++) {
      if (Character.isWhitespace((char) ch))
        spaces++;
    }
    System.out.println(total + " chars  "
       + spaces + " spaces");
  }
}