EDTの外でGUIの作業を行っているSunのデモ？

私はJava SunのチュートリアルからSplashDemo.javaを探しています。このクラスは、アプリケーションの起動時にスプラッシュ画面を作成する方法を示しています。 SplashDemoはmainメソッドに直接フレームを作成します。この例では、invokeLaterを使用してイベントディスパッチスレッドでGUIコードを実行しないのはなぜですか？EDTの外でGUIの作業を行っているSunのデモ？

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/* 
* SplashDemo.java 
* 
*/ 

import java.awt.*; 
import java.awt.event.*; 

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(); 
    } 
}

出典

2011-05-20 Berry