sclass TranslucentWindowTest {

  new L<JWindow> windows;

  run {

    var screens = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();

    System.out.println("Detected " + screens.length + " screen(s)");

    for (int iScreen = 0; iScreen < screens.length; iScreen++) {

      var screen = screens[iScreen].getDefaultConfiguration().getBounds();

      // place window in center of screen

      new JWindow window;

      window.setBounds(

        screen.x+screen.width/4,

        screen.y+screen.height/4,

        screen.width/2,

        screen.height/2);

      // faint (mostly translucent) blue background

      window.setBackground(new Color(0, 0, 255, 64));

      window.setAlwaysOnTop(true);

      var label = new JLabel("Screen " + (iScreen+1) + " of " + screens.length);

      label.setHorizontalAlignment(JLabel.CENTER);

      window.add(label);

      window.setVisible(true);

      windows.add(window);

    }

    doAfter(10.0, r {

      disposeWindows(windows);

    });

  }

}