This week's book giveaway is in the Kotlin forum.
We're giving away four copies of Kotlin in Action and have Dmitry Jemerov & Svetlana Isakova on-line!
See this thread for details.
Win a copy of Kotlin in Action this week in the Kotlin forum!
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Timo von Oertzen
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Hi everybody,

I've got the following problem: I want to show in a JFrame a flickering, i.e. a noise as you see it on your TV if you recieve no sender. It ought to be quiet fast (say, every 20 ms). I tried to use getGraphics(), and it worked fine on a PC, but failed on a Macintosh (getGraphics() returned null there). How would you programm such a flickering? I'm happy for any ideas.
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