Java Tutorial/Swing/Splash Screen

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A progress bar indicating the progress of application initialization

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics2D; import java.awt.SplashScreen; import javax.swing.JFrame; import javax.swing.JLabel; public class Main {

 public static void main(String args[]) throws Exception{
   SplashScreen splash = SplashScreen.getSplashScreen();
   Graphics2D g = (Graphics2D) splash.createGraphics();
   Dimension dim = splash.getSize();
   for (int i = 0; i < 100; i++) {
     g.setColor(Color.RED);
     g.fillRect(50, 50, dim.width - 100, dim.height - 100);
     splash.update();
     try {
       Thread.sleep(250);
     } catch (InterruptedException ignored) {
     }
   }
   JFrame frame = new JFrame("Splash Me2");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JLabel label = new JLabel("Hello, Splash", JLabel.CENTER);
   frame.add(label, BorderLayout.CENTER);
   frame.setSize(300, 95);
   frame.setVisible(true);
 }

}</source>





A splash screen for an application

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Toolkit; import javax.swing.BorderFactory; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JWindow; class SplashScreen extends JWindow {

 private int duration;
 public SplashScreen(int d) {
   duration = d;
   JPanel content = (JPanel) getContentPane();
   content.setBackground(Color.white);
   int width = 450;
   int height = 115;
   Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
   int x = (screen.width - width) / 2;
   int y = (screen.height - height) / 2;
   setBounds(x, y, width, height);
   content.add(new JLabel("asdf"), BorderLayout.CENTER);
   Color oraRed = new Color(156, 20, 20, 255);
   content.setBorder(BorderFactory.createLineBorder(oraRed, 10));
   setVisible(true);
   try {
     Thread.sleep(duration);
   } catch (Exception e) {
   }
   setVisible(false);
 }
 public static void main(String[] args) {
   SplashScreen splash = new SplashScreen(10000);
 }

}</source>





JDK6 Splash Screen

   <source lang="java">

import java.awt.AlphaComposite; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Frame; import java.awt.Graphics2D; import java.awt.Menu; import java.awt.MenuBar; import java.awt.MenuItem; import java.awt.SplashScreen; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class JDK6SplashTest extends Frame{

 static void renderSplashFrame(Graphics2D g, int frame) {
   final String[] comps = { "foo", "bar", "baz" };
   g.setComposite(AlphaComposite.Clear);
   g.fillRect(130, 250, 280, 40);
   g.setPaintMode();
   g.setColor(Color.BLACK);
   g.drawString("Loading " + comps[(frame / 5) % 3] + "...", 130, 260);
   g.fillRect(130, 270, (frame * 10) % 280, 20);
 }
 public JDK6SplashTest() {
   super("SplashScreen demo");
   setSize(500, 300);
   setLayout(new BorderLayout());
   Menu m1 = new Menu("File");
   MenuItem mi1 = new MenuItem("Exit");
   m1.add(mi1);
   mi1.addActionListener(new ActionListener(){
     public void actionPerformed(ActionEvent e){
       System.exit(0);
     }
     
   });
   MenuBar mb = new MenuBar();
   setMenuBar(mb);
   mb.add(m1);
   final SplashScreen splash = SplashScreen.getSplashScreen();
   if (splash == null) {
     System.out.println("SplashScreen.getSplashScreen() returned null");
     return;
   }
   Graphics2D g = (Graphics2D) splash.createGraphics();
   if (g == null) {
     System.out.println("g is null");
     return;
   }
   for (int i = 0; i < 100; i++) {
     renderSplashFrame(g, i);
     splash.update();
     try {
       Thread.sleep(200);
     } catch (InterruptedException e) {
     }
   }
   splash.close();
   setVisible(true);
   toFront();
 }
 public static void main(String args[]) {
   JDK6SplashTest test = new JDK6SplashTest();
 }

}</source>





SplashScreen in action

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*

* SplashDemo.java
*
*/

import java.awt.AlphaComposite; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Frame; import java.awt.Graphics2D; import java.awt.Menu; import java.awt.MenuBar; import java.awt.MenuItem; import java.awt.SplashScreen; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; public class SplashDemo extends Frame implements ActionListener {

 static void renderSplashFrame(Graphics2D g, int frame) {
   final String[] comps = { "foo", "bar", "baz" };
   g.setComposite(AlphaComposite.Clear);
   g.fillRect(120, 140, 200, 40);
   g.setPaintMode();
   g.setColor(Color.BLACK);
   g.drawString("Loading " + comps[(frame / 5) % 3] + "...", 120, 150);
 }
 public SplashDemo() {
   super("SplashScreen demo");
   setSize(300, 200);
   setLayout(new BorderLayout());
   Menu m1 = new Menu("File");
   MenuItem mi1 = new MenuItem("Exit");
   m1.add(mi1);
   mi1.addActionListener(this);
   this.addWindowListener(closeWindow);
   MenuBar mb = new MenuBar();
   setMenuBar(mb);
   mb.add(m1);
   final SplashScreen splash = SplashScreen.getSplashScreen();
   if (splash == null) {
     System.out.println("SplashScreen.getSplashScreen() returned null");
     return;
   }
   Graphics2D g = splash.createGraphics();
   if (g == null) {
     System.out.println("g is null");
     return;
   }
   for (int i = 0; i < 100; i++) {
     renderSplashFrame(g, i);
     splash.update();
     try {
       Thread.sleep(90);
     } catch (InterruptedException e) {
     }
   }
   splash.close();
   setVisible(true);
   toFront();
 }
 public void actionPerformed(ActionEvent ae) {
   System.exit(0);
 }
 private static WindowListener closeWindow = new WindowAdapter() {
   public void windowClosing(WindowEvent e) {
     e.getWindow().dispose();
   }
 };
 public static void main(String args[]) {
   SplashDemo test = new SplashDemo();
 }

}</source>





SplashScreen with custom painting

   <source lang="java">

import java.awt.Color; import java.awt.Dimension; import java.awt.FontMetrics; import java.awt.Graphics; import java.awt.SplashScreen; public class SplashScreenDemo {

 public static void main(String[] args) {
   SplashScreen splashScreen = SplashScreen.getSplashScreen();
   Dimension size = splashScreen.getSize();
   int borderDim = (int) (size.height * 0.05);
   Graphics g = splashScreen.createGraphics();
   g.setColor(Color.blue);
   for (int i = 0; i < borderDim; i++)
     g.drawRect(i, i, size.width - 1 - i * 2, size.height - 1 - i * 2);
   FontMetrics fm = g.getFontMetrics();
   int sWidth = fm.stringWidth("Initializing...");
   int sHeight = fm.getHeight();
   if (sWidth < size.width && 2 * sHeight < size.height) {
     g.setColor(Color.blue);
     g.drawString("Initializing...", (size.width - sWidth) / 2, size.height
         - 2 * sHeight);
   }
   splashScreen.update();
   try {
     Thread.sleep(5000);
   } catch (InterruptedException e) {
   }
 }

}</source>