import java.awt.*;  
import java.awt.event.*;  
import javax.swing.*;  
  
public class Lotto extends JFrame implements MouseListener{  
      
    Container finestra;  
    JComboBox risultati;  
    JButton pulsante;  
      
    public Lotto() {  
        super("Simulazioni del Lotto");  
        String stringhe [] = {"Uno","Due","Tre"};  
        finestra = getContentPane();  
        finestra.setLayout( new FlowLayout() );  
        risultati = new JComboBox(stringhe);  
        risultati.addMouseListener(this);  
        pulsante = new JButton ("Premi");  
        pulsante.addMouseListener(this);  
        finestra.add(risultati);  
        finestra.add(pulsante);  
    }  
      
    public static void main(String args[]) {  
        Lotto lotto = new Lotto();  
        lotto.setSize(600,400);  
        lotto.setVisible(true);  
        lotto.setDefaultCloseOperation(EXIT_ON_CLOSE);  
    }  
          
    public void mouseEntered(MouseEvent e) {  
        setTitle("Entered");  
    }  
      
    public void mouseExited(MouseEvent e) {  
        setTitle("Exited");  
    }  
      
    public void mouseClicked(MouseEvent e) {}  
    public void mousePressed(MouseEvent e) {}  
    public void mouseReleased(MouseEvent e) {}  
 }