JavaFx in headless mode

Question

Is it possible to run JavaFx in headless mode(in Java 7)? It is being used to generate images on the server but is asking for an X-Server. Does there exist something like java.awt.headless in JavaFx ?(I can't use Xvfb )

Answer 1

Here is how I solved this problem for server-side image geneartion on Ubuntu linux environment with jetty application server. It uses xvfb but only as a "library" - without any additional special actions on server:

apt-get install xvfb

// then on application server start:

export DISPLAY=":99"

start-stop-daemon --start --background --user jetty --exec "/usr/bin/sudo" -- -u jetty /usr/bin/Xvfb :99 -screen 0 1024x768x24

You can see the details of my server-side image generation solution in this SO question.

Answer 2

This is a kind of problem which I encountered while capturing images in Mac OS.

I have solved this issue by using

static {

        System.setProperty("java.awt.headless", "false");
}

See for reference : Headless environment error in java.awt.Robot class with MAC OS

Answer 3

Answer by Shreyas Dave didn't work for me anymore. Though I don't know why, here is what I did:

public static void main(String[] args) {
    // to avoid
    // [JRSAppKitAWT markAppIsDaemon]: Process manager already initialized: can't fully enable headless mode.
    System.setProperty("javafx.macosx.embedded", "true");
    java.awt.Toolkit.getDefaultToolkit();
    // end
    launch(args);
}

This was also pointed out here: JavaFX screencapture headless exception on OSX