import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.io.*;
import java.util.*;

class GUIitaliaRPC {
    public static void main(String argv[]){
        JFrame f = new JFrame("ITALIA"); // creo la finestra principale
        f.setLayout(new GridLayout(2,3,5,10));
        f.setSize(800,800);
        
//list box
        JLabel lblR= new JLabel("Regioni");
        JLabel lblP= new JLabel("Province");
        JLabel lblC= new JLabel("Comuni");
        
        //String array to store weekdays
        Vector <String> regioni = new Vector<String>(1,1);
        Vector <String> province = new Vector<String>(1,1);
        Vector <String> comuni = new Vector<String>(1,1);
    //variabili
      String riga;
      String nomefile = "";
      StringTokenizer st = null;        
      String token = "";
    //gestore file
      FileReader fr = null;
      BufferedReader fIN = null;
//carica reg/pro/com
      nomefile = "regioni.csv";
    //apertura file
      try { fr = new FileReader(nomefile); fIN = new BufferedReader(fr); }
	  catch(IOException e) { System.out.print("Errore APERTURA file"); System.exit(1); }
    //lettura file
	  System.out.println("Contenuto del file.");
	  riga = "";
	  try {
      //leggo una riga intera per volta
        while((riga = fIN.readLine()) != null) {
          //System.out.println(riga);
          st = new StringTokenizer(riga,",");
          token = st.nextToken();//idr
          token = st.nextToken();//idr
          regioni.addElement(token);
        }//while lettura
	  }
	  catch(IOException e) { System.out.print("Errore LETTURA file"); System.exit(1); }
    //CHIUSURA file
	  try { fr.close(); }
	  catch(IOException e) { System.out.print("Errore CHIUSURA file"); System.exit(1); }
      
    //ordino il vettore
        Collections.sort(regioni);

        //create list
        JList JLreg = new JList(regioni);
        JList JLpro = new JList(province);
        JList JLcom = new JList(comuni);

JLreg.addListSelectionListener(new ListSelectionListener() {
  public void valueChanged(ListSelectionEvent e) {
    if (!e.getValueIsAdjusting()) {
      //...
    }
  }
});        

//aggiungo gli oggetti nella form
        f.add(lblR);
        f.add(lblP);
        f.add(lblC);
        f.add(JLreg);
        f.add(JLpro);
        f.add(JLcom);
//visualizzo frame
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        f.setVisible(true);
    }
}