import java.awt.GridLayout;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JFrame;import javax.swing.ImageIcon;/* * LabelDemo.java is a 1.4 application that needs one other file: *   images/middle.gif */public class LabelDemo extends JPanel {    public LabelDemo() {        super(new GridLayout(3,1));  //3 rows, 1 column        JLabel label1, label2, label3;        ImageIcon icon = createImageIcon("images/middle.gif",                                         "a pretty but meaningless splat");        //Create the first label.        label1 = new JLabel("Image and Text",                            icon,                            JLabel.CENTER);        //Set the position of its text, relative to its icon:        label1.setVerticalTextPosition(JLabel.BOTTOM);        label1.setHorizontalTextPosition(JLabel.CENTER);        //Create the other labels.        label2 = new JLabel("Text-Only Label");        label3 = new JLabel(icon);        //Create tool tips, for the heck of it.        label1.setToolTipText("A label containing both image and text");        label2.setToolTipText("A label containing only text");        label3.setToolTipText("A label containing only an image");        //Add the labels.        add(label1);        add(label2);        add(label3);    }    /** Returns an ImageIcon, or null if the path was invalid. */    protected static ImageIcon createImageIcon(String path,                                               String description) {        java.net.URL imgURL = LabelDemo.class.getResource(path);        if (imgURL != null) {            return new ImageIcon(imgURL, description);        } else {            System.err.println("Couldn't find file: " + path);            return null;        }    }    /**     * 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("LabelDemo");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        //Create and set up the content pane.        LabelDemo newContentPane = new LabelDemo();        newContentPane.setOpaque(true); //content panes must be opaque        frame.setContentPane(newContentPane);        //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();            }        });    }}