Showing splash screen while loading...

Question

Hi,
I'd like to show a splash screen while the application is loading (setting up hibernate session etc.) - here is my main method which is loading hibernate and starting up the application:
        public static void main(String[] args) {
          java.awt.EventQueue.invokeLater(new Runnable() {
               public void run() {
                    MdbCheckerApp app = new MdbCheckerApp();
                    app.initializeLookAndFeel();
                    // preload Hibernate session
                    HibernateUtil.getSession();
                    // login successful
                    // if (app.login()) {
                    new MdbChecker().setVisible(true);
          HibernateUtil.closeSession();
     }How do I show my splash screen while simultaneously loading the hibernate session?
Thanks in advance
- Stephan

Answer 1

However, I'm not quite sure on how to proceed...
    public static void main(String args[]) {
        final TestForm tf = new TestForm();
        tf.showSplash();
        tf.runInitializer(new Runnable() {
            public void run() {
                try {
                    Thread.currentThread().sleep(3000);
                } catch (Exception e) {}
                tf.hideSplash();
    public void runInitializer(Runnable r) {
        Thread t = new Thread(r);
        t.start();
    public SplashScreen showSplash() {
        // if a splash window was already created...
        if(splash != null) {
            // if it's showing, leave it; else null it
            if(splash.isShowing()) {
                return splash;
            } else {
                splash = null;
        splash = new SplashScreen(null, true);
        centerComponent(splash);
        splash.show();
        return splash;
    public void hideSplash() {
        if (splash != null) {
            splash.dispose();
            splash = null;
    }I'm wondering why I do only see the splash screen (I was hoping that the splash screen would be disappearing after 3 seconds).
Here is the code of my splash screen:
public class SplashScreen extends javax.swing.JDialog {
    /** Creates new form SplashScreen */
    public SplashScreen(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        setLocationRelativeTo(null);
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                         
    private void initComponents() {
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jProgressBar1 = new javax.swing.JProgressBar();
        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setTitle(java.util.ResourceBundle.getBundle("com/gigatronik/mdbchecker/ui/bundle/MdbCheckerMessages").getString("splashscreen.title"));
        setModal(true);
        setUndecorated(true);
        jPanel1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/com/gigatronik/mdbchecker/ui/resources/gigatronik_4c_300.jpg")));
        jProgressBar1.setIndeterminate(true);
        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jProgressBar1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jLabel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabel1)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jProgressBar1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        pack();
    }// </editor-fold>                       
     * @param args the command line arguments
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new SplashScreen(new javax.swing.JFrame(), true).setVisible(true);
    // Variables declaration - do not modify                    
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JProgressBar jProgressBar1;
    // End of variables declaration                  
}Any help would be greatly appreciated.
- Stephan