nimport java.awt.*;
nimport java.awt.event.*;
n
n public class Mundo
{
n Frame
janela;
n public void
roda() {
n class FechaMundo extends WindowAdapter
{
n public void
windowClosing(WindowEvent e) {
n
janela.dispose();
System.exit(0);
n }
n }
n janela = new
Frame("Mundo");
n janela.add(new
Label("Olá Mundo!"));
n
janela.addWindowListener(new FechaMundo());
n janela.pack();
janela.setVisible(true);
n }
n public static
void main(String[] args) {
n new
Mundo().roda();
n }
n }