exo5: Add the code that permit to build a word counter.

[Project_POO.git] / exo5 / Main.java

import java.io.File;
import java.util.Scanner;
import java.io.IOException;
import java.util.TreeMap;

class Main {

    /**
     * The main() function
     * @param String[] args main() function arguments array
     */
    public static void main(String[] args) {
        TreeMap<String, Integer> tm = new TreeMap<String, Integer>();
        File f = new File("test_file.txt");
        try {
            Scanner sc = new Scanner(f);
            while (sc.hasNext()) {
                String wordCursor = sc.next();
                //NOTE: words comparaison is case sensitive and punctuation aware
                Integer count = tm.get(wordCursor);
                if (count == null) {
                    count = 0;
                }
                tm.put(wordCursor, count + 1);
            }
            sc.close();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        for (String wordCursor : tm.keySet()) {
            System.out.println("Word \"" + wordCursor + "\" occured " + tm.get(wordCursor) + " times");
        }
    }
}