Can you import from the Minecraft Windows 10 edition, a world to which Java editon?
I don't know my way around now, but I don't think so, because the 2 games are programmed very differently… That is also the reason why you can't play with Java with win 10.
You could possibly do something with schematics… Since they are blocks…
Why do I answer if I don't know exactly? Simply because it upsets me when around 30 people see the question and 2 of them write an answer.
No, that's 100% impossible
I have not tried this myself now, but should actually work:
https://windowsloop.com/convert-minecraft-windows-10-to-java/