/* * GridLayoutDemo.java is a 1.4 application that requires no other files. */import java.awt.*;import javax.swing.*;public class GridLayoutDemo {    public final static boolean RIGHT_TO_LEFT = false;    public static void addComponentsToPane(Container pane) {        if (RIGHT_TO_LEFT) {            pane.setComponentOrientation(                ComponentOrientation.RIGHT_TO_LEFT);        }        pane.setLayout(new GridLayout(0,2));        pane.add(new JButton("Button 1"));        pane.add(new JButton("Button 2"));        pane.add(new JButton("Button 3"));        pane.add(new JButton("Long-Named Button 4"));        pane.add(new JButton("5"));    }    /**     * Create the GUI and show it.  For thread safety,     * this method should be invoked from the     * event-dispatching thread.     */    private static void createAndShowGUI() {        //Make sure we have nice window decorations.        JFrame.setDefaultLookAndFeelDecorated(true);        //Create and set up the window.        JFrame frame = new JFrame("GridLayoutDemo");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        //Set up the content pane.        addComponentsToPane(frame.getContentPane());        //Display the window.        frame.pack();        frame.setVisible(true);    }    public static void main(String[] args) {        //Schedule a job for the event-dispatching thread:        //creating and showing this application's GUI.        javax.swing.SwingUtilities.invokeLater(new Runnable() {            public void run() {                createAndShowGUI();            }        });    }}