import java.awt.*;
import java.awt.event.*;

public class Janela extends Frame {

    class WindowHandler extends WindowAdapter {
	public void windowClosing(WindowEvent we) {
	    dispose();
	    System.exit(0);
	}

	public void windowActivated(WindowEvent we) {
	    we.getWindow().validate();
	}
    }

    public Janela() {
	this("Janela");
    }

    public Janela(String titulo) {
	setTitle(titulo);
	setSize(320,200);
	addWindowListener(new WindowHandler());
    }

    public static void main(String[] args) {
	Janela j = new Janela();
	j.setVisible(true);
    }
}