Java Tutorial/Swing/Splash Screen

A progress bar indicating the progress of application initialization

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);
  }
}

A splash screen for an application

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);
  }
}

JDK6 Splash Screen

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();
  }
}

SplashScreen in action

/*
 * 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();
  }
}

SplashScreen with custom painting

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) {
    }
  }
}