Я разрабатываю приложение вJava 6 (1.6.0_24) который использует прозрачныйJFrame чтобы получить исчезающую анимацию. Вот мой код:

public static void slowDisappearWindowAction(Window source, int milisSlow, int milisFast) throws InterruptedException{
    float level = 1.0f;
    //slow effect -> 50%
    for(int i=0; i<8 ; i++){
        level=level-0.05f;
        AWTUtilities.setWindowOpacity(source,level);
        Thread.sleep(milisSlow);
    }
    //fast effect -> 0% 
    for(int i=0; i<8 ; i++){
        level=level-0.05f;
        AWTUtilities.setWindowOpacity(source,level);
        Thread.sleep(milisFast);
    }
    AWTUtilities.setWindowOpacity(source,0.1f);
}

Он отлично работает на моей машине, но когда я проверил его на другом ПК сJava 7 У меня установлена следующая ошибка:

 Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException:
 The frame is decorated
    at java.awt.Frame.setOpacity(Unknown Source)
    at java.awt.Window$1.setOpacity(Unknown Source)
    at com.sun.awt.AWTUtilities.setWindowOpacity(Unknown Source)
    at pl.design.bead.pattern.model.window.WindowHelper.slowDisappearWindowAction(WindowHelper.java:21)
    at pl.design.bead.pattern.forms.MainForm$ExitController.windowClosing(MainForm.java:123)
    at java.awt.AWTEventMulticaster.windowClosing(Unknown Source)
    at java.awt.Window.processWindowEvent(Unknown Source)
    at javax.swing.JFrame.processWindowEvent(Unknown Source)
    at java.awt.Window.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$000(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

Я думаю, что это потому, что вJava 7 Я должен использоватьWindow.setOpacity(...) вместоAWTUtilities методы.

Можно использовать прозрачность вJava 6 приложение, которое будет работать наJava 7 ?