// To create a desktop, see e841 Creating a JDesktopPane Container
    
    // Retrieve all internal frames
    JInternalFrame[] frames = desktop.getAllFrames();
    
    for (int i=0; i<frames.length; i++) {
        // Get internal frame's title
        String title = frames[i].getTitle();
    
        // Determine if the internal frame is visible
        boolean isVisible = frames[i].isVisible();
    
        // Get other properties
        boolean isCloseable = frames[i].isClosable();
        boolean isResizeable = frames[i].isResizable();
        boolean isIconifiable = frames[i].isIconifiable();
        boolean isIcon = frames[i].isIcon();
        boolean isMaximizable = frames[i].isMaximizable();
        boolean isSelected = frames[i].isSelected();
    }