winxp alt+f4 does not close out windowimport javax.swing.*;import javax.swing.border.*;import java.awt.event.*;import java.awt.*;public class MyWindow { private JLabel label_01; private JButton close; JWindow win = new JWindow(); public MyWindow(){ Container container = win.getContentPane(); container.setLayout( new FlowLayout() ); label_01 = new JLabel( "Label with text" ); close = new JButton("Close"); container.add( label_01 ); container.add( close ); win.setSize(100,150); win.setVisible( true ); win.setVisible(true); } public static void main(String s[]) { MyWindow mywin = new MyWindow(); }}