Why Javafx UI hangs or become unresponsive on using Plarform.runLater() ?

[Navdeep Singh Sidhu]

Thank you guys , i will try all your suggestions. Jeffery i tried your
Xanthic code, it says some files from parser package are missing. I will
happy to try your code as soon you will finish it, :) let me know whenever
you finish your code and stabilize it. Also don't forget to add
dependencies in your .jar library, that may save a lot of time for other
users. :) Proper documentation will help starters like me. :P.

For the time i'm trying to use RichTextFX, and adding the code area to the
tabs i will use in code editor, but line numbers are missing because Tomas
applied the css to the scene in my case i'm returning the codeArea from
JavaKeywordsAsync class without adding it to Scene and applying the CSS to
the codeArea. thanks a lot all of you.

Regards
Navdeep Singh Sidhu