Java - set opacity in JPanel

Question

Let\'s say I want to make the opacity of a JPanel %20 viewable? I don\'t mean setOpaque (draw or not draw) or setVisible (show or hide)... I mean make it see-through JPanel.

Answer 1

It doesn't work so well on windows 7.

panel.setBackground( new Color(r, g, b, a) );

the alpha channel just lightens the color.

when an element is updated on a color with an alpha channel, the computer gets confused and resets the background of the updated element without an alpha. I'm going to try

AWTUtilities.setWindowOpacity(aWindow, aFloat);

next.