// importing the java package that contains each class you would like to use
import java.io.IOException;
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;
//creating a class called "SimpleWordCounter"
public class SimpleWordCounter {
    //creating a constructor for the object
    public static void main(String[] args) {
//try to run the following:
          try {
//creating an object from the class "File", named "f"
            File f = new File("ciaFactBook2008.txt");
            //intializing the Scanner
            Scanner sc;
            // assiging the value of the scanner object to new Scanner variable
            sc = new Scanner(f);
            // sc.useDelimiter("[^a-zA-Z']+");
        //creating a "Map" class that takes in 2 data types from the class map and "TreeMap for the object "wordCount"
            Map<String, Integer> wordCount = new TreeMap<String, Integer>();
            // creates a while loop checking for user input
            while(sc.hasNext()) {
                String word = sc.next();
                //if/else is nested in the while loop
                //creates an if/else loop for the object "wordCount"
                //if wordCount does not contain the word
                if(!wordCount.containsKey(word))
                //since it doesnt. pair the value 1 with the word and add to the map
                    wordCount.put(word, 1);
                    //if the "wordCount' does contain the word, increase the value of the word in the map by 1
                else
                    wordCount.put(word, wordCount.get(word) + 1);
            }

            // show results
            //for each word in the "wordCount" insert a space in between the key and the value (the word and how many times the word occurs)
            for(String word : wordCount.keySet())
                System.out.println(word + " " + wordCount.get(word));
                //prints how many word there are
            System.out.println(wordCount.size());
        }
        //if the try fails because of an IOException, print error message
        catch(IOException e) {
            System.out.println("Unable to read from file.");
        }
    }
}