gistfile1.txt

import java.util.*;
import java.io.FileReader;
import java.io.BufferedReader;

// read text file (plain text, no formatting)
// output how many times each word occurs in the text
// words consist only of A-Z/a-z, nothing else
// 'hello, Hello, jean-paul' => 'hello: 2 jean: 1 paul: 1'
public class Counter {

  // usage: java Counter path/to/file.txt
  public static void main(String[] argv) throws java.io.IOException {
    BufferedReader reader = new BufferedReader(new FileReader(argv[0]));

    String line = reader.readLine();
    // line == null when file empty
}