import java.io.IOException;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import java.awt.Font;
import java.io.File;
import java.util.Scanner;

public class WordsExerciseSolution {
    
    public WordsExerciseSolution() throws IOException {
        ArrayList<String> theWords = new ArrayList<String>();
        // modify code here to handle the case when the user clicks cancel
        String fileName = JOptionPane.showInputDialog("Enter Input File Name","src/WordsExercise.java");
        if( fileName == null ) return;
        Scanner fileScanner = new Scanner(new File(fileName));
        // the delimiters are any number of spaces,commas,periods or end-of-lines
        fileScanner.useDelimiter("[ ,.\n]+");
        while( fileScanner.hasNext() ) {
            // words here are any characters except space, '.', '.' and end-of-line
            // for the assignment words consist only of letters
            String nextWord = fileScanner.next();
            // add code here to add the next word to
            // the ArrayList theWords if not already there
            if( !theWords.contains(nextWord) ) theWords.add(nextWord);
        } // end while
        String out = "The unique \"words\" are:\n\n";
        // iterate through theWords and concatenate each word to
        // out along with an end-of-line character
        for( String word : theWords ) {
            out += word + "\n";
        }// end for
        JTextArea outArea = new JTextArea(out,20,35);
        outArea.setFont(new Font("Courier",Font.PLAIN,15));
        JOptionPane.showMessageDialog(null,new JScrollPane(outArea));
    } // end WordExercise()
    
    public static void main(String[] a) throws IOException {
        new WordsExerciseSolution();
        System.exit(0);
    } // end main
    
} // end WordsExercise