/* * Swing version. */import java.awt.*;import java.awt.event.*;import javax.swing.*;public class TabWindow extends JFrame {    boolean inAnApplet = true;         final static String BUTTONPANEL = "JPanel with JButtons";    final static String TEXTPANEL = "JPanel with JTextField";    public TabWindow() {        Container contentPane = getContentPane();        JTabbedPane tabbedPane = new JTabbedPane();        JPanel p1 = new JPanel() {            //Force the window to be 400+ pixels wide.            public Dimension getPreferredSize() {                Dimension size = super.getPreferredSize();                size.width = 400;                return size;            }        };        p1.add(new JButton("Button 1"));        p1.add(new JButton("Button 2"));        p1.add(new JButton("Button 3"));        tabbedPane.addTab(BUTTONPANEL, p1);        JPanel p2 = new JPanel();        p2.add(new JTextField("TextField", 20));        tabbedPane.addTab(TEXTPANEL, p2);        contentPane.add(tabbedPane, BorderLayout.CENTER);                addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent e) {                if (inAnApplet) {                    dispose();                } else {                    System.exit(0);                }            }        });    }    public static void main(String args[]) {        TabWindow window = new TabWindow();        window.inAnApplet = false;        window.setTitle("TabWindow");        window.pack();        window.setVisible(true);    }}