Should I be distracted by other programming languages?

Question

Java

Hello, a bit of background:
I'm a C#(WPF), Java developer, I'm graduating from university, I haven't worked in companies in these areas yet, but I want to finally find a job in this area.

Actually questions:
1. Is it worth it at the moment to take on the study of other programming languages, technologies, or is it better to study the already chosen areas well? (before looking for a job, I want to implement my project in Java and C#)
2. Are C#/Java specialists in demand at the moment and will they be in demand in the near future, are these areas promising?
3. If you still need to pay attention to other programming languages, which ones? (the backend is closest to me)

Answer 1

1. Open a job site for the area where you plan to look for work, and see who they are looking for and what they want.
2. Yes

Answer 2

knowledge of sql is often required

Answer 3

1. Go deeper into what you already know. Both in C# and Java, there are a huge number of development directions, overgrown with a large number of frameworks, libraries, etc.
2. Yes, in a commercial / enterprise environment these are the most popular languages.
3. SQL and dialects (if you delve into C #, then T-SQL, if in Java - PL / SQL and PL / pgSQL)
For the future, if you ask this question again (and you will), remember that you know better 2-3 programming languages ​​(or programming language and related technologies) are good than knowing many languages ​​is bad.

Answer 4

See I'm kind of a Sharepoint developer.
This includes C#, powershell, COM, RDL, javascript, vbs, cmd, winapi, some knowledge about infrastructure, axis model, network protocols, application programs, css front, webpack, vue,
jquery yourself. By the way, I didn’t mention SQL, this is a separate and very broad topic.