I'm adding my application icon with stage.getIcons().add(new Image("path")) and the icon will appear sometimes, so I know that the program can find the resource and I'm calling the right methods, but the icon won't appear every time. From what I can tell from this question this is probably because swing (which I believe JavaFX uses) loads images in a separate thread. If this is the problem, how can I ensure that loading and adding the icon finishes before I call stage.show()? If this is not the problem, what is going on here and what am I doing wrong? I'm using JRuby so your answer can include Ruby libs if they're applicable. A purely Java answer is fine too.
JavaFX 8 - Application Icon will only sometimes appear
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Hello I think that the program process that loads the image does did not finish loading before you are showing it. You can add a
wait()function after your icon addition. Or you can execute another function in between youradd(new Image("pokemon.png"))and yourprimaryStage.show()this will ensure that your image load will finish before you show the stage.