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

class FenBouton extends JFrame implements MouseListener
{
        
    private JButton monBouton ;
    
    FenBouton()
    {
        
        setTitle("Fenetre à bouton");
        setBounds(100,200,400,500);
        monBouton = new JButton("Ok");
        getContentPane().setLayout(new FlowLayout());
        getContentPane().add(monBouton);
        addMouseListener (this);       
        setVisible(true);
    }
    
    public void MouseClicked(MouseEvent ev)
    {
        System.out.println("" + "Pression sur OK !");
    }
    
    public void mousePressed(MouseEvent ev)
    {
    }
    
    public void mouseReleased(MouseEvent ev)
    {
    }
    
    public void mouseEntered(MouseEvent ev)
    {
    }
    
    public void mouseExited(MouseEvent ev)
    {
    }

}



public class Fen
{
    public static void main(String args[])
    {
        FenBouton fen = new FenBouton();
    }
}