What language will be better for the production of business applications?

Question

Python

Hello.
At the moment I know: python (for the web + tests) + sql/html/css/js - I use it to write web projects on django. Now there was an idea to write an application for android / ios - and then make a combine for windows at all (well, if it works, then for poppy).
Therefore the question arose between C# and Java. I read the description, it seems that both can solve my problems. But the question is:
What will help straighten your arms, and what is better for working remotely (simply or in conjunction with Python)
In general, I want to learn two Python + "X" languages ​​​​- work remotely and saw my projects.

Answer 1

Well, judging by the end goal, Java is more common
. Besides, if you plan to write your desktop on both Windows and Mac, it’s better to write it once
Yes, .net applications can also be run on a Mac, but for end user problems, in this case more
In general, Java

Answer 2

write an application for android / ios - and then make a combine for windows at all (well, if it works, then for poppy).

And what about Enterprise? Are you going to write a browser application?
If not, then the "native" tool for Android (client) applications is Java, for Windows - C#, for iOS and OS X - neither but Obj-C / Swift. cross-platform tools have a narrower range of applications, therefore they are doubtful, on Windows the same Xamarin is already much inferior to the "native" C#.
Only Elizarov's apparatus, etc.! Or intelligence in your brain, if you use it. Nothing else is able to "straighten your arms", none of the listed languages ​​\u200b\u200bis suitable for programming the brains and hands of people, a person has proprietary firmware, the author is God, reverse engineers have not yet mastered it.

Answer 3

Java, because out of the win + mac + linux + android box, there is a tool from Google j2objc to translate the java code of an android application into objectC ios . Although it will not get rid of the blood, it will shed much less =)